FYI:
It has been confirmed. Can upgrade from Windows 8 RP via Windows 8 Upgrade successfully. It does work, it can be done. This is good news for folks that wiped out their non-beta Windows they HAD before (wrongly) installing the RP on top of it & or for folks who have been dual-booting the RP beside a previous Windows which, they want to, still, keep... just go ahead & use the Win8 Upgrade where the RP is.
Cheers,
Drew
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