Can anybody from dev team elobrate what's happening?
Yes. Nobody jumped the gun - source was released at 3:09 UTC. Premine was also accurate. We are focusing on updating everything right now and can answer any other questions later once we have a few minutes.
We mined it with a 10 KH/s laptop, so difficulty was low at the exact time of launch. There is just a whole lot of hashrate being thrown at piCoin right now.