A teaser video clearly hints at developer interviews and behind-the-scenes footage, but English-only speakers may have a hard time following.
Those interested can tune in to the official event through Sony's Japanese PlayStation Web site at 3 a.m. PT March 9. A note on the site mentions that Sony will give away 20 3G/Wi-Fi Vitas if you tune in, but we assume this is a Japan-only promotion.
Coincidentally (or maybe not), the streaming event also falls around the same time as the Game Developers Conference expo and South by Southwest. We'll keep our ears on the ground and report back if anything juicy emerges.