What do you take as 'official proof' ? Nokia does not publish PR release dates, so its existence is as official as PR1.2 or PR1.1 was prior to releasing. There needs to be a firmware(s) that delivers QtMobility, the Web Runtime, and maybe even Qt4.7. Technically, it would be best if we could get these WITHOUT firmware upgrades, but users tend to have tunnel vision to features delivered outside of them.

As for lack of lack of official MeeGo support, I think most people are not aware what exactly has been announced there, or in general what MeeGo means, though that can be IMHO mostly attributed to the confusing nomenclature.