I've heard this. The rumor I have heard most often is that one of them will be a 75 MP monster to replace the 5DS. There is less chatter about the second, but some say it will be a more professionally oriented version of the EOS-R, e.g., with dual card slots. I haven't heard anything about fixing the limitations of the first iteration, which unlike the 5D series, doesn't have wonderful controls. The second one, if the rumors are right and if they fix those few problems, might be very tempting, even though it is FF. The one lens I own that I have thought about replacing is the EF 24-105, and first reviews suggest that the new R version is noticeably better.