http://www.canonrumors.com/2012/06/4-new-dslrs-coming-in-2012-cr2/
I know it's not exactly a detailed rumor...but...interesting none-the-less.
"More to come
Received some information that Canon is far from done as far as camera launches go for 2012. I am being told that 4 more DSLRs are coming in 2012.
Which cameras?
It’s unknown if the expected mirrorless entry counts against the mentioned 4 camera bodies.
Speculation about what the 4 cameras could possibly be are below.
1) “Entry Level” full frame camera. Think of it as a direct replacement for the 5D Mark II.
2) Prosumer APS-C, possibly the 70D and not a direct replacement of the 7D.
3) The big megapixel entry, mentioned to be an EOS-1D style body.
4) A mirrorless entry.
If the mirrorless doesn’t count against the 4 purported camera bodies, I’m unsure what else Canon could have up their sleeves for the EOS line. A few people have suggested a 5D in the cinema EOS lineup, however I don’t think that’s likely until after the EOS-1D C starts shipping in late 2012."