Sony plans to release a Patapon 3 demo this week.
The multiplayer demo is due out on 6th July in the US and 7th July in Europe.
Patapon 3 is a PSP-exclusive 2D adventure about a tribe who like to "dance, sing and pillage their way through the countryside".
They do this by performing a series of dances and chants based on rhythmic inputs from the player.
According to Sony, the multiplayer demo for Patapon 3 will also allow you to play over the internet using Wi-Fi.
The official PlayStation blog update sort of seems like it has more details, but we don't really know what any of them mean.
Patapon 3 is due out exclusively for PSP this September in the US but doesn't appear to have a European date yet - although Play.com has it down as 5th November.
Check out the E3 announcement trailer below for a better sense of what to expect.