So JOYSO is compatible with ERC20 tokens. But which tokens are you planning to list first?
Yes. For starters I think the tokens being listed would be announced as the platform develops and gets ready for launch. As per the whitepaper and roadmap, they'll work on these promotions and partnerships aggressively.
Also, a good point that I see is that new ICOs can list for free and will also get 50% Off on marketing under their Joy select program. Which is a good attraction for new ICOs.