The PS3, as far as I know, right now is the only HDMI 1.3 device in the world. There will likely be many more that are shown in early January, likely as prototypes, at the Consumer Electronics Show (CES).
If I were to take a guess, it likely will be a few months into 2007 when we first start to see any HDMI plasmas and receivers hit the market, but I fully expect Denon to have something. Perhaps Panasonic with a plasma, but it is hard to tell. I think HDMI messed up big time by not having HDMI finalized well before CEDIA 2006 so that manufacturers could incorporate the technology into new products for the holiday season.
A month or so and HDMI 1.3 will likely have a much clearer picture of what will be available.