In addition to the updated Gran Turismo HD Concept, Sony Computer Entertainment America today is adding a teaser video for Grand Theft Auto IV: Things Will Be Different, the next installment of the blockbuster franchise, and a demo of the hotly anticipated Armored Core 4.

Below are the details of the exciting new offerings from the PLAYSTATION Store:

Gran Turismo HD Concept v. 1.2 (free update): Developed by Polyphony Digital, Gran Turismo HD Concept delivers an unparalleled racing experience in full HD 1080p* resolution with next-generation graphics and physics. Race ten cars from worldwide manufacturers, including the Gran Turismo debut of Ferrari. This updated version enables you to view the Top 10 worldwide rankings for each car and mode. Also, Gran Turismo HD Concept now is fully compatible with force feedback via Logitech®'s Driving Force™, Driving Force™ Pro, and Driving Force™ EX steering wheels.

GTA IV: Things Will Be Different Teaser (free): The hugely anticipated, new installment in the ground-breaking Grand Theft Auto series is set to arrive for the PLAYSTATION®3 (PS3™) system in October 2007, but you can catch a glimpse of what’s in store now in this HD teaser video.

Armored Core 4 Demo (free): The most enthralling mech action series is back with Armored Core 4. Now you can check out a playable demo featuring three exciting single-player missions from the full version of the game in addition to a sneak-peek of the game’s deep customization mode.

Brand-spankin’ New Movie Trailers: Download movie trailers of Are We Done Yet?, Perfect Stranger and Stardust.