Launch is a broad term that be understood in many ways. Pick any of your liking:
1. HEAT Forum launch
2. Alpha wallet and testnet demo launch
3. ICO verification launch
4. Genesis block launch
5. Beta Wallet launch
6. Various individual features launch
All coming up in that order. How soon? Can't tell, we're getting there.
We have 1, and 2. Next step is 3, then after a short time, genesis will launch.
I think since the ball has started rolling, everything will come sooner than later.