According to CR, Canon is going to announce several IS version of prime lenses in first half of 2014.
The two new non-L lenses are: EF 50mm f/1.8 IS and EF 85mm f/2 IS. The 50mm f/1.8 IS lens has rumored for a long time, while the EF 85mm IS lens will have the aperture slower than the current f/1.8.
There is another 135mm IS lens to be announced in 2014. It was unknown yet whether or not the lens would be an “L”.