its the official site. i dont know what they want to do but something like a second ico for sponsors? but for what they want a priv key?
one thought, may be their website / web server is hacked, and hacker cleverly put it there ;-)
let's see what does someone from NEO team has to say for this
Well, when U see this . you should be smart enough to transfer out every NEO from you ICO address to another address before you enter the private key to the website for the ICO give back.