since we have no idea what OS that is in particular, and it is likely a beta OS (since the phone isnt even out yet) there is no way to answer this question. same with the theme. welcome to the forums.
Anything is possible, however not very likely ... I agree with the statements above, this could likely be a Beta OS. Or a very cool theme on the rumored 4.5 OS ... I personally love that theme.
Generally, you can only load an OS made specifically for your device - i.e. you can't load an 8130 OS on an 8830 or an 8800 on an 8810/20/30, etc. I will assume that RIM will follow the same practice with the 9000 series. They may or may not release a similar OS for older phones. Only time will tell.
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