According to PhotoBlog, Canon is about to announce new photo products on the 24th of January just before the PMA fair in Las Vegas.
Obviously, they do not have more information than anybody else on what will be announced really. But they speculate on a replacement for the EOS 400D/Rebel Xti (Canon EOS 450D, maybe) or a replacement for the EOS 5D (either Canon EOS 6D or Canon EOS 5D Mk II, depending on who you ask to).