According to Canon Rumors and a Danish web site, the next round of Canon annoucements (Point’n Shoots and EOS) will be done on August 19.
For me, it would probably be the launch of the long-expected Canon EOS 60D due to replace the existing Canon EOS 50D. Normally, in this part of the Canon line, this should be a fairly incremental step. Neither the 40D nor the 50D was a revolution, but Canon keeps pumping good reliable SLR cameras around this price point.
The only big question is: “Will Canon bring Full Frame down from the EOS 5D Mk II to the xxD line?”