Theres a rumour that Sony will be adding a feature to take a screenshot of games in the next firmware update.
Maybe they will allow us to take a screenshot of the XMB or video/dvd/bluray, but I think it's more likely to happen to the games.
there is nothing "official" that i have heard of.
But there is a device called HDFURY and it will strip the hdcp (high definition content protection" from the hdmi or dvi signal and then you can record it on your pc if you have a video card with compatible input for these signals.
as is i can record with s-video but the card in my pc isnt the best and the video somewhat lags so game play is rough at best when trying to do this.
But just so you know there are options out there for recording your game play. But if you dont already own the hardware required plan on spending some $$ to be able to do it. :'(