This may just be a sign that the M5 Ultra Mac Studio is shipping sooner rather than later, as it's common for Apple to push out ship dates for soon to be replaced products.
We do have leaked benchmarks showing that the M5 Max outperforms the M3 Ultra currently shipping in the Mac Studio, so buying an M3 Ultra Studio right now would be a terrible idea.
Every mathematician and computer scientist should feel deeply confused that the M... Ultra is more powerful than the M... Max.
Why? Because if something is the maximum, there doesn't exist anything larger/better. :-)
Well, for iPads, the base has (had? Haven't closely followed them for a while) an older CPU for some reason. And the Air is actually a "Pro-lite", rather than a weight optimized version.
Don't get started on where the mini sits, or what happens if you want "nicer" features like 60hz+ displays in a small form factor... a feature that budget android tablets have had for years.