Is this a super good news for Emercoin, or is it a scam?
Is emercoin really involved in the project?
If so why nodoby is talking about it here?
It's a scam run by the emercoin/hascoins/hashflare team, specifically EMC lead dev Oleg Khovayko (aka: maxihatop).
See here: https://bitcointalk.org/index.php?topic=417623.msg19282108#msg19282108
Speaking strictly of Polybius, you can't call it a scam without providing some evidence. The onus of proof is on you, the accuser.