After a weekend of immersive reading, I too would like the opportunity to sign up for any available Epsilon 22 backplanes (3 ch). Ti and the AMB community members are inspiring. Sent a PM to TI as a follow-up step.
The payment deadline has passed, only three people failed to pay and were dropped from the group-buy. Thanks to the rest of you, the boards are now on order for fabrication, and the ETA is around July 5th.