The Winter 10 release is right around the corner and Winter ’10 Pre-Release Orgs are now available. Go here to sign up for a new org on the Winter 10 release.
Additionally, the Winter ’10 Release Notes have made an appearance. Keep an eye on the Last Updated Date on the front page of that document as I assume the document will be changing leading up to the release.
Emails went out yesterday telling administrators about the scheduled downtime. On the System Status Page, you can see the Winter 10 schedule. The first Production orgs to get it are NA1, NA6, NA7 and AP1 on October 3. The rest follow on October 10.