Yes this, just read the data from the website. And based on the data that I read from the website, this project will implement both Proof of work and Proof of stake at the same time.
(I could make this conclusion because of this statement).
We hope to achieve a full transition to PoS mining and validation much faster than it happens in the Ethereum network
but why do I feel like, something is missing? still watching for more information, still have plenty of time before the date of the snapshot/hardfork.
Given the trends in today's crypto market, the transition from classical mining to the POS algorithm is a very good decision. Thus, the network will be held by the coin owners and will not depend on powerful mining farms.