"Unless of course you are right, in which case Valve sent out a press release about something utterly inconsequential in the process of making games: 'hey guys! Build xxxx got sent to our internal Q&A (just like all our other builds)!'. See what I mean?"
Valve didn't send out a press release. It was a forum post.
Besides, Vivendi's internal QA usually only lasts 72 hours. Assuming they don't find any major show-stopping bugs, the game will go gold soon.