It took a little bit longer than expected, but Harmonix has announced that Amplitude should be available for the PS3 in April. The developer shared the good news with their fans today on Kickstarter:
First up, PS3 version: It’s done! We’re submitting it to Sony certification today. The certification and release process takes a couple weeks, but you’ll be able to get your Sixaxis controllers all up in Amplitude’s business in April. We’re hoping for early April, but I’ll let you know when we have a confirmed date locked down.
Amplitude was originally released for the PS4 back in January, and everyone who purchased that version will also receive access to the game on the PS3 through Sony’s Cross-Buy program.