Well my N8 was a replacement phone, which has the product code 059B6T3, which seems to be the same replacement code for all replacement N8s worldwide going by the Nokia forums. I can't find anywhere to track the progress on it, but I haven't received any updates yet for it
The update for my E7 was around 320MB but its much faster than Anna
My Product Code Is 059C9M2 For those guys want to play around with Phoenix
Just to note some apps might not be in the market after u update eg. Mobile Tv (To watch DSTV Mobile) as these were made for Anna/Symbian^3
but you can get around this by going to the store on your pc browser hand have your phone connected and ovi suite running and when selecting to download the app you select download to pc and it works fine.But make sure you select Symbian Anna other wise it wont work.