It's official, or at least close to official, anyway. Christian Ankow updated his .plan with the latest on tonight's Win32 only Q3Test release:

To expand some more on Graeme's .plan update, I've just sent out the release build to the mirror sites and asked them to beat on it for a while on their LANs. We don't forsee any problems with the release, but want to play it safe by getting them to beat on it for a few hours.

Tonight, we plan on releasing a Win32 version only. The Mac and Linux versions are not ready to go yet.

If all goes well with testing, I'll be giving the mirrors the go-ahead to publicly post the file on their sites around 10pm CST.