They've already explicitly said it'll come with a compiler..this hasn't anything to do with XMB, they're seperate operating systems.
Your idea of "best case scenario" is worst case scenario to me I think it's pretty obvious what 'Linux' will be, at a high level, in the context of how it's been discussed to date and what they have provided before.
Your idea of "best case scenario" is worst case scenario to me I think it's pretty obvious what 'Linux' will be, at a high level, in the context of how it's been discussed to date and what they have provided before.