No, there will be only one coin.
It will be a transition from POW consensus to POS. They are planning to make it completely miners free. They plan to do it in 2020. I do no think it will be possible in 2020.
It's not exactly making it miners free. Miners simply won't be doing PoS work anymore, that's all. I mean, in any type of blockchain where it's secured by nodes and nodes are rewarded for helping to verify transactions, I still call them miners, regardless of whether they're solving pow puzzles or simply staking or operating masternodes. End result is they're doing miners work, right?