From the Cakewalk store,

"Special Offer: Starting August 1 through October 31st, when you purchase SONAR X1 Producer, you will get SONAR X2 Producer for free once it becomes available. Take advantage of all the new features in SONAR X1 without having to worry that a new version is just around corner."
 
Would this indicate a release of at least no earlier than November?

And then why would they remove the upgrade option after Oct 31st if it wasn't being release on Nov 1st? Keep your eye on that page and see if the second date is removed! If it is, then Nov 1st it is ;)

If we get monthly teasers, then we got two more to come before release day ;)