Gefen (http://www.gefen.com) has released the HDMI 1.3 splitter. For
home theaters using both a mounted flat panel and drop down screen,
or any multiple display application, the Gefen 1:2 Splitter for HDMI
v1.3 offers ay method of viewing the same HD source on two displays
or a display/projector combination.

The unit supplies one HDMI input that supports all versions of the
HDMI interface. Two HDMI outputs connect direct to the two displays
or projectors for delivery of high definition video with deep color
and support for DTS Master Audio and Dolby TrueHD.

Resolutions up to 1080p full HD with HDCP compliance may be viewed on
both displays simultaneously, and the Gefen splitter works with all
of today's Blu-ray players, gaming systems and set-top boxes using
the HDMI format. For optimal performance, both displays should be set
to the same high definition resolutions.

To distribute both audio and video to more than two displays, Gefen's
1:2 Splitter for HDMI v1.3 can be cascaded to create larger
distributions. Gefen also supplies a 1:3 Splitter for HDMI 1.3, a 1:5
HDMI 1.3 Splitter, and a 1:10 HDMI v1.3 Distribution Amplifier.