Dash users now have improved security against 51% mining attacks via Chainlocks and the ability to instantly re-spend upon receipt via LLMQ-Based InstantSend. More info:
https://blog.dash.org/dash-core-v0-14-on-mainnet-ef2d0e49e29a
Nice and easy update for masternodes this time, documentation is here: https://docs.dash.org/masternode-update