If you buy them on Xbox 360 and Playstation 3 of course. This is backed up by both product pages on PSN and XBLA.
No idea of this is native resolution or upscaled. I have decided to drop SEGA an e-mail and wait like a rabid dog all weekend for a response. I hope the answer is yes.
[Source: Sonic Stadium]
Ad:
Hmm? I thought that the XBox 360 was incapable of handling 1080p.
Oh, where's Shadi when you need him?
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Hmm? I thought that the XBox 360 was incapable of handling 1080p.Oh, where’s Shadi when you need him?
It's capable, but most of the time when it says the game runs at 1080p, it's actually upscaled from 720p. (or somewhere near 720p)
That's nice if it's true. I won't be able to use that resolution since my Sharp Aquos only goes up to 1080i/720p. Oh well 720p looks fine.