NAB 2013: Canon has announced the development of a 35mm prime lens in its Cinema EOS range. It is designed to be used on movie cameras with image sensors up to 35mm full frame in size, and includes a range of features optimized for movie shooting. The company has not finalized its specifications and pricing, but says it will release further details in due course. However as the Cinema EOS primes offer T-stops that correlate closely with existing L-series primes, it seems likely the 35mm will be approximately T1.5, and of course use the EF mount.
News: Digital Photography Review (dpreview.com)