Hi Logarus,
Thanks for the question. The beta period is now closed. The ruleset is now marked 'Early Access' and will be in the store soon.
GL with Pirates. There will be an official conversion (guessing late summer) from Mongoose for that on FG, but from what I've read of it, you'll have few issues with this ruleset, the only thing that might be an issue is Animals use HitPoints, NPC's only support the Wound Track at the moment.
Cheers,
MBM