We’re told to expect new Canon L primes, but none will be announced in 2014.
The first one we can expect is a new 35L in early 2015, this has been rumored since the 24L was announced. There have been lots of patents for the optical formula, but nothing has come of it.
The second is a new 50L in late 2015. The new lens is said to be a lot smaller and lighter, perhaps a drop to f/1.4?
There may have been development delays in L lens development as Canon has been working hard building a cinema lens lineup.