The ipad pro's marketing copy describes it as "..packed with our most advanced technology, it will make you rethink what iPad is capable of. And what a computer is capable of."
Computers are capable of using mice. Even a WinCE box sitting inside a touchscreen ATM will support a mouse if you can hook one up to it.
> The iPad also supports an implement that mimics something professionals have been using to draft blueprints and create art for millennia.
I don't recall ever needing to buy a pencil that was specific to the make and model of the paper I wrote on.
My original comment was in response to "Samsung should look at what Apple is doing". And what they're doing, and doing very well, appears to be writing persuasive marketing copy that turns glaring feature deficiencies into upsell opportunities like "just buy the pen for another $100".