What happen to this coin recently? I heard this coin the first cryptonote that using adaptive cryptonote algo...
Yup - that's correct. Nerva is CPU only - no GPU no ASICS and no Pools.
The most recent changes were a hardfork that implemented bulletproofs, a new multi-platform GUI wallet that is developed in-house (not a forked Monero wallet or something), WooCommerce integration is on the testnet, and once complete (since it has more of a direct impact on solo mining) - Uncle Mining from Masari will be merged.
Lots of cool stuff to look forward to.