Today we announce DarkNote XDN Hybrid Proof-of-work/Proof-of-stake (Hybrid PoW/PoS) development. The very first PoS implementation for CryptoNote coins.
Oh look, DarkNote is doing what Cloak failed to do after months of trying! I better let them know.

On the downside, I'll have to either remove XDN from my whitelist or change the 100% POW requirement.

We will always keep Proof-of-work!
The goal is to make network very secure, environment, user and investors friendly.
Proof-of-Work phase is going now and PoS will be added when block rewards will be near min_block rewards value.