If a YouTube video posted by wmpoweruser.com is to be believed, it features a Nokia Lumia 900, suggesting that the device would run Windows Phone 8. The leaked feature shows off the Photo Hub tile split into two.
The one on the left is the latest photo tile, with the second something new. The second feature is the "meet up with Sarah", in the Contact tile, none of which are features in the current iteration of Windows Phone. The screenshot above shows the difference.
Not that this is something that is huge news, but the talk of Windows Phone 8 is interesting in itself. Microsoft seem to be really pulling their stuff together lately, and if this is a sign of things to come, it looks like Microsoft may just pull Windows Phone right up to the ranks of iOS and Android sooner, rather than later.