The third version of beta stressnet for Full-Chain Membership Proofs (FCMP++) and CARROT is coming soon!
'Full-Chain Membership Proofs prove the output spent is one of any output on the chain, effectively removing all of these risks. This means every input goes from an immediate anonymity set of 16 to 100,000,000.'
jberman said the remaining v3 blocker is hot/cold wallet work, which is in progress. jeffro256 said major changes from jberman’s review are done; only renamings remain.
jberman: It's just hot/cold wallet stuff now, we're working on it