I think that before a x50 in BTC price we will see x100-x1000 in a lot of alts. So I tend to prefer alts on a relative basis. The further you get into bitcoin the more you see that a lot of alternative blockchains are more fast, cheap and scalable.

Yeah probably they signed a non-disclosure agreement. They just forgot it and tweet about listing. Then they understood they were making an error and removed their tweet. Or maybe I am only dreaming 

Ahah I love the way they removed the tweet without explaining anything