Microsoft have started to test Windows Phone 8 internally. We just spotted the Windows Phone 8 in the HTML5 Test site’s Mobile section. It is listed among Nokia Belle FP2 [Yay! New Symbian], Blackberry 10 [Powered by QNX eh ? ], Tizen[Ah you Meego] .
From what we saw is that the HTML 5 performance in Windows Phone 8 have doubled compared to Windows Phone 7. Let the waiting game starts!