Samsung has started sending out invites to the Samsung Mobile UNPACKED 2011 event come 11th October. While it is unknown as to what Samsung plans to unveil during the event, given the previous rumors along with an unannounced Samsung device showing up on the CTIA list, speculation is pointing at a possible announcement of the Samsung Nexus Prime/Droid Prime/Galaxy Prime.
This seems to coincide with previous rumors that Samsung will be unveiling the third Nexus device after the iPhone 4S/5 has been unveiled, which is expected to take place on the 4th of October.