No one outside Panasonic knows when they will be offering 3D capable projectors, but I guarantee they will someday. I'm also confident that someone will be selling HDMI 1.4, 3D capable projectors that will work fine with the Blu-ray spec by the end of this year.
Nobody is sure that the currently available 3D projectors will work with any upcoming Blu-ray movies, and nobody knows when the studios will actually release 3D versions of their movies. The studios would be smart to hold off, sell all the regular versions they can, & then sell a second wave of "Special Edition" 3D versions about a year later. They will want to sell a lot right on the release of the Blu-Ray, and not for the disc to get shopworn and forgotten while customers gradually accumulate their 3D TV sets.
Waiting will be necessary whether we want to or not.