When are wallets going to be developed for Grin?
With open source projects you never know. everyone is welcomed to help them developed. No one is paid to do it so he can do it today or next month. They will be here when done. You can of course help by developing or if you have not such skills by donating in general found to hire some developers.
Uh and I just found this:
https://medium.com/circle-blog/poloniex-enables-grin-withdrawals-donates-to-grin-general-fund-114906884f95Polo doing the right things again. Poloniex made its first monthly donation of 1.27864 BTC to the Grin General Fund.
You have plan add to binance ?
Binance is always welcomed to add Grin on their platform and earn fees by people trading it.