If you'll recall, Win7 talks were discussed in press releases the weeks before Vista was released.
This "blue" discussion is a couple of months before commercial Win8 releases, so it's a bit odd but, seriously, no one truly expects any one OS to become the End All Be All, do they? There's always The Next One.
Win7 was pleasant because, in the month before it's delivery, and even for another couple, there was a discussion of Wait For SP1 because this is how Windows Wisdom had been earned. But after a couple of months, there were many forum-writings that said, "I tried Win7 and liked it, and I'm moving into it before SP1..."
THAT was a new wrinkle, I thought.
Wisdom still leans towards wait and see, though. There are always a few oddities in the commercially released package - drivers that don't work ("Hello - HP Printer Land? You didn't get the last note about Win2000 or WinXP changes?")...