I was wondering this about the 900 and 1100 too.
Best buy everywhere by me is out of the RF Extender and the web site states not available for shipping.
The guy at the store said their computer system shows the 900 good through 2013. The other BB employee chimed in and said he heard that the 1100 and RF extender were on hold awaiting a firmware update. Said something about the 1100 getting a QWERTY layout.
With all the remotes on sale at BB website and the RF extender not available, it led me to believe new remotes were on the horizon.
How old is the 900 and 1100?