Update: Amplitude has been funded!
With just 24 hours to go, Amplitude for the PS4 and PS3 is oh so close to being fully backed.
As of this article being posted, the Harmonix's kickstarted Amplitude successor project has topped $751,000, so we're less than $24k shy of their $775k goal. There has been a recent surge of funding, and if they continue at this pace, it may indeed reach its goal.
Make sure to kick in a few bucks if you haven't already!