Yes Virginia, the long awaited maintenance release is
now available for you to upgrade to.

in your case, we are now at
2.9.1 so maybe it is time to upgrade from 1.5?
Supposedly this will
fix the schedule update bug in 2.9 and a few other issues, but hey, least this time the Beta and RC versions were out for more than a day, so hopefully it is now fixed.
Now, Wonder what
OTHER bug they missed will now surface?
IF it doesn't show up in you admin top, go to
TOOLS and click on
UPGRADE. It will show up there, as sometimes the announcement doesn't seem to make it through right away.
REMEMBER TO BACKUP YOUR DB FIRST