Caribdis just posted the release schedule on Patreon an hour or so ago. Demon Lords get it Thursday, God Tiers get it Sunday, then it's down a tier every 6 days so public release is April 16th (Good lord, a whole month away...)
Looks to be a Nova/Luna/Penny/Nancy chapter, probably to do with the two worlds teased in 0.6, the Pirate server and the Japanese server, plus Nova's One Piece "Finale" watch party...