The new RX (that will sit on the same platform as the 08 Highlander remodel) has been spied, but heavily cladded ... from the sounds of it, the gas powered RX will be out sometime next spring (likely April-ish 2008) as an '09 model. My guess would be that the RX hybrid will be out a few months later in the fall.

Lexus had a VERY mild re-fresh of the RX350 this past February/March/April and brought it out early as an '08 model ... the 400h is following suit with the slight changes right about now.