With regards to KuCoin announcing their release of the new platform to trade in, theres are lot of information we dont know yet about it. Few of which is having a Main Account and the Trading Account. Main Account is where you can deposit and withdraw your funds while in Trading Accounts, well of course you can buy and sell your tokens.
You can read more all about it here: https://www.kucoin.com/news/en-KuCoin-Platform-V2-Upgrade-Complete