Canonrumors.com posted some unconfirmed specs of the rumored Canon 3D and 6D

Canon EOS 3D (unknown model name)
Resolution: 14mp Full Frame
FPS: 5fps
LCD:3″
AF: 9 point
ISO: 100-3200
Memory Card: CF & SD
Proc: DIGIC III
Sealing: Some (40D)
Feature: Live View w/AF
Price: $1999 USD
Canon EOS 6D(unknown model name)
Resolution: 20mp Full Frame(Sounds unbelievable, but true)
FPS: 5fps
LCD: 3″ VGA
AF: 19 point
ISO: 50-6400
Memory Card: CF & SD
Proc: DIGIC III
Sealing: Yes, Full.
Feature: Live View w/AF
Price: $2999 USD”

Updated Rumor changes above a bit, new price and resolution rumor

“6D” (unknown model name) – Resolution: 12mp
Price: $2199 USD

“3D” (unknown model name) – Resolution: 18mp
Price: $3199 USD