A recently-published patent filing reveals a Canon 28mm f/1.4 lens possibly in the works. There is no 28mm fast L lens in Canon’s line-up so that would be a nice addition to the line to slot in between the EF 24mm f/1.4L II USM and the EF 35mm f/1.4L USM lenses.
Of course, a patent filing doesn’t necessarily mean a lens is imminent but these filings have been a pretty good barometer for lenses in the past. Note that this patent was filed in 2014 and just published this month.
[via Canon Rumors]