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The first two sentences of the article sum up the announcement and eliminates most of the confusion:

Today, we’re announcing that the next release after .NET Core 3.0 will be .NET 5. This will be the next big release in the .NET family.

There will be just one .NET going forward, and you will be able to use it to target Windows, Linux, macOS, iOS, Android, tvOS, watchOS and WebAssembly and more.

I think Microsoft has been guilty of what you say in the past but this announcement and their product offering going forward could not be more clear.

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It is quite confusing and misleading to say "There will be just one .NET going forward" since this will not affect the .net framework at all - there will still be two incompatible platforms (4.8 and 5/core) for the foreseeable future. They just changed the name of one of them.

I think the problem with MS is they want a simple name change to look like some new unifying strategy. Developers would be much happier if they just cut out the bullshit and made it clear this is just a name change of .net core. The name change in itself is fine.

MS is just FUD'ing themselves with these confusing messages.

>It is quite confusing and misleading to say "There will be just one .NET going forward" since this will not affect the .net framework at all - there will still be two incompatible platforms (4.8 and 5/core) for the foreseeable future. They just changed the name of one of them.

Well, everything will move to 5. And the framework at 4.8 will stop being developed. And 5 ( Core, whatever you want to call it, ) is incompatible with the .Net 4.8.

How misleading is it?

> everything will move to 5

Not likely. Many libraries (like web forms) will probably never be migrated. We will have two incompatible .net's for the foreseeable future. Changing a name does not change that.

That's right; we'll have two incompatible .NETs for the foreseeable future but only one will be getting new features. .NET 5 will unify Core, Standard and Xamarin/Mono.

In what way will this unify .net Standard with Core etc.? Or are you talking about a different standard?

I'm genuinely confused because the illustration shows .net standard as a layer between .net 5 and various platforms. But if that is the case, the platforms will not be able to take advantage of newer features, since .net standard is the API shared with .net 4.8. This does not seem likely.

Yes that's a good question. The situation today with .NET Core vs .NET Standard is: Standard is the common functionality that works in both .NET Framework and .NET Core. Standard continues to overlap more with Framework as those features are added into Core.

After .NET Core 3.0, MS said new features will only be added in Core. And when they reach .NET 5, Standard and Core will be identical, with "Standard" being the library you link to regardless which specific .NET implementation you're running on: desktop, IoT, mobile, etc. I believe the diagram only means that "Standard" covers all of .NET 5, not some subset of Core. And .NET Framework is a separate, maintained legacy library off to the side.

Note, I don't work for Microsoft, this is just my understanding from reading their docs and talking with them about it online and at MS Build.

So ".net Standard" is going to mean two different (incompatible) things in the future?

I don't see how you reached that conclusion. Once .NET 5 arrives, there won't be any more concern with ensuring portability between .NET Core apps and .NET Framework apps by way of targeting .NET Standard.

.NET Standard will be only one thing, if they end up retaining the name at all. It will be the the interface to everything in .NET 5. .NET Framework will just be its own thing maintained only for legacy compatibility. After .NET Core 3.0, new development will not be added to .NET Framework.

I do agree with you that it would be clearer if they only spoke of .NET 5 and .NET 4.8 Framework versions.

> Once .NET 5 arrives, there won't be any more concern with ensuring portability between .NET Core apps and .NET Framework apps by way of targeting .NET Standard.

In the real world there are massive amounts of code in the .net framework. Because of the significant breaking changes between 4.x and core/5 it will take a long time before all this code is ported, and many application will probably never be ported, while still having to be maintained. So for the foreseeable future it is going to be very important whether libraries are 4.x compatible or not.

Consider Python had (IMHO) fewer breaking changes between 2 and 3, but still the migration took about a decade.

> In the real world there are massive amounts of code in the .net framework.

Right, I agree with everything you said here. That's exactly the reason why MS said at the Build conference that they will be supporting .NET Framework "forever". There is a lot of it out there and it will likely remain for a very long time.

When I said there won't be a concern with portability via .NET Standard, I merely meant that the current shifting landscape of Framework features vs Core features vs the intersection known as Standard, will go away. There will be .NET 4.8 in maintenance mode and .NET 5 as the future, growth mode. Maintaining .NET Framework apps hopefully won't be a problem but if you're thinking of building a new app using .NET 4.8, you're likely making a big mistake unless it's to satisfy some immediate need that doesn't work on .NET Core. MS said they're committed to supporting people stuck in that position. Just don't expect new features that will appear in future .NET versions.

> When I said there won't be a concern with portability via .NET Standard, I merely meant that the current shifting landscape of Framework features vs Core features vs the intersection known as Standard, will go away.

I'm really struggling to understand this. Can you explain how you would prepare to port a .net 4.x site to core/5, if the notion of a compatible intersection goes away? How would you even make a library which is compatible with both 4.x and 5?

If you are thinking of porting an old 4.x app but you wait until some time beyond Nov 2020 (https://i.redd.it/f8todfd66uw21.png) then it is in your interest to track the latest .NET Standard along the way. If you haven't been keeping the app up to date, say you're on 4.6.1, and then you decide you like .NET 5 and want to move to it, I think you'll just have to try it and fix whatever breaks.

This is pretty much like every other porting project where you have an old neglected project that you want to bring up to date. Maybe there is an easier way but I don't know what it is. Staying on the legacy .NET Framework isn't the end of the world, you're just committing to maintaining it as is. If you want new features as they become available, well... that's on you, don't wait.

Maybe you move some functionality out of your legacy GUI app to microservices written in .NET 5, parts that are unlikely to have any porting issues. In any case it's not like anyone is going to be surprised by what's going on. Maybe the community will back port some new things to .NET 4.8. MS will be devoting their efforts to enhancing the new platform while keeping the old one on life support. I think that's reasonable. (edit: typos)

Yeah all that is completely obvious. So why not just communicate honestly: This is a massive breaking change. It is going to be painful, but is necessary to moving forward. But don't deny the reality of it.

Saying .net 5 is unifying .net is like saying Python 3 unified Python or that Angular 2 unified Angular.

> If you haven't been keeping the app up to date, say you're on 4.6.1,

Again, why the dishonest arguing? 4.6.1 is years old, but you will have exactly the same problem if you are on 4.8 which was just released. It has nothing to do with code not being updated.

> where you have an old neglected project that you want to bring up to date

Again, this has nothing to do with projects being old and neglected. It is a breaking change, it will affect all projects on .net framework if they want to upgrade. And you know that.

I honestly fail to see what has been dishonest in the communications around this.

The plan for .NET 5 does, in fact, unify .NET Standard, Core and Xamarin. These will no longer be separate things but will go forward under one name.

I'm not sure what you're claiming as the _breaking change_. Can you be specific? It's not, in fact, going to break anything from what I can see. .NET Standard will simply continue to grow larger in .NET Core 3+ until it covers everything. This seems to me to be very different from the Python situation where you are (probably) forced to make code changes to compile with Python 3. If I have some code that compiles with .NET Standard 2.0, are you under the impression that it won't compile with .NET Core 3+ or .NET 5? If so, what leads you to think that?

OK, sorry I called it dishonest, that was out of line since it was assuming bad faith. I just don't think we can pretend .net framework doesn't exist anymore just because the successor is announced.

If they just said ".net framework is being discontinued; .net core will be known as .net", that would help a lot.

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