Deribit
Exchange UpdatesOfficial statement regarding downtime May 12th & 13th 2019
Deribit- Exchange Updates
Introduction of the trigger Last-Price on Deribit
Deribit 
Exchange UpdatesIntroduction to Reduce-only on Deribit
Deribit- Exchange Updates
Stop Market Orders, Estimated Liquidation Price and more new features
Deribit - Exchange Updates
Introducing The Deribit Perpetual
Deribit