FreeWallet.org scam – millions stolen
reddit.com
reddit.com
https://www.reddit.com/r/CryptoCurrency/comments/6gtrmd/free...
I think this is an attempt at inducing a panic.
But more seriously, clearly too early to tell what's happening here. Regardless, if people had their ETH in a closed-source wallet application at all, it's unsurprising that this would happen to it.