Is there any ETA about the wallet official public release? I'm pretty interested in this coin's concept

No ETA has been set. While a lot of people are anxiously waiting for the wallet, I think its better not to give an ETA. If the team set an ETA, then a problem crept up and ETA wasnt met, the coin would get slammed as a sham.
I can tell you the pre-release wallet is being THOROUGHLY tested before being posted. One of the holdups is with Hive mining. Every time a new version of the test wallet comes out, we have to wait for dwarves to mature and make sure the Hive difficulty is scaling correctly.
Ideally, the wallet would have been released within a day or two of snapshot, but that didnt happen. Please be patient. For up to date information, please join Discord server. Invite link is in post #1.