Canon filed a patent 2012123155 for a 35mm f/1.4 lens:
Panasonic filed a patent 2012118522 in Japan for a teleconverter with a motorized zoom. The user will be able to select the desired focal length by using the zoom of the lens and the teleconverter.
Pentaxforums found some interesting Pentax DSLR patents (8208056 and 8208032) - could they be for the rumored full frame camera?