Will Airdrop be last in June ? 10%, is that right ?
It will be ending around the end of april.
As I calculated it, the airdrop will continue much, much longer. I think 3 weeks ago, I started checking the airdrop wallet and back then, it held some 4mil BTX, and for the airdrop, they transferred out a bit more than 100.000 BTX:
http://insight.bitcore.cc/address/13hwgY4YUvrgnhjLP5ugFafL1cmbRRtr5eI'm not sure if I calculated anything wrong, but to me, it looks like the airdrop will last a bit longer.

I think the end of Airdrops around the end of april is good calculated.