Lenkeng Electronics releases their new PSP to HDMI converter box that can convert the PSP's standard definition 480p signal to a near HD 720p, complete with stereo audio.
Since most HDTVs come equipped with either a component or VGA input and a built in scaler, I'm not real sure how handy this device would be.
Lenkeng did not reveal and pricing or availability dates, so just keep playing the waiting game if you are interested.