Re: Stake.com | The Bitcoin Casino | Plinko, Mines, Blackjack, Roulette + 8 more 👽
Altcoins will be added in the next few days or weeks, but will not take years. As Stunna said, they are in the process of testing, the team is working so hard and are making sure that the update will be as perfect as possible before releasing.
What are the coins that will be listed, ETH will be listed initially as said by Stunna but what about bitcoin cash as i think we need to include that too since it is a fork coin of bitcoin, everyone is having those as spare without any use for now. 
BitcoinCash is my favourite too. I like to see zcash too. But I'm not the one who knows which coins will be listed, so, just guessing.