A reader sent in a link to Canon UK that shows the Canon EF 50mm f/1.4 and Canon EF 50mm f/2.5 compact macro as “production ended”. Quite often we see typos on various Canon web sites, but it's often only one lens. In this case, three lenses that were thought to be current are there. Three typos? I guess it's possible, but unlikely. The EF 135mm f/2.8 soft focus lens is also makes the list and I do not remember it being officially discontinued.
Of these, the EF 50mm f/1.4 is the obvious candidate for replacement. I'm not sure how many people used the compact macro and I've never met anyone that owns a soft focus 135mm.
Check out the list for yourself.