Symmar22 - thanks for the extra info on the soft focus thing.
No problem, it's always a pleasure.
My opinion about the next updates, is that we should see a 50mm f1.4 IS, I wonder if they would do the same with the 50mm 1.8, since they always kept a very clear separation within their ranges : 1.2 L, 1.4 USM, 1.8 cheap everything. I would more see a 50mm 1.8 USM without IS as an ugrade too keep an entry level offering.
After should come the 85mm and 100mm, Not sure though they would make them both f2, since it would make them a bit too similar. The deal is not so bad as it is, a bit brighter but shorter (85mm), or a bit longer for 1/3 stop loss (100mm). IMO it shows a more clear separation between the two lenses, if both would be f2, I wonder if the obvious choice wouldn't be to take the 100m for most people (the longer, the better), and might kill the sales of the 85mm f2. I agree that the actual difference between 1.8 and 2 is almost none, but marketing people may see it otherwise.
Then we need a modern standard macro lens, with USM, IS, and of course 1:1 reproduction ratio. I think the 50mm focal is a bit outdated here, since most close up pictures can benefit from a slightly longer lens. Nikon got that principle early, with the 55mm macro, that was later extended to 60mm. It is somehow equivalent to the 210mm lens used on a 4x5 view camera, for the same reason, more natural perspective in object photography.
Finally, the 135mm f2.8 IS USM would close the chapter of the very old, non USM lenses dating back from the late 80's.
It seems Canon has decided to start with the wide angle end, replacing the 15mm, 24mm, 28mm, 35mm. One should note they did not upgrade non-L USM lenses in between though. The 20mm f2.8 USM and the 28mm f1.8 USM are still here.
So it would be interesting to see if they are only getting rid of the non-USM lenses (then the next ones should be 50mm f2.5 macro, and the 135mm f2.8 ) , or if they are renewing the whole non-L prime range....