I can confirm that the change is official. The change went into effect sometime after we received positive poll results. Unfortunately, it seems that we did not make a clear announcement regarding the change and for this I am very sorry as it has caused some confusion and frustration.
To clarify, you now have a 10 day waiting period after joining a fleet. Once the 10 days has been spent, you can freely leave and then rejoin. You cannot join another fleet prior to having spent the 10 days. The new system should allow for greater flexibility with organization and less reports of accidental dismissals.
-Randy