Like it says at the end of the chapter, Saki takes a break until July. This probably means there will be a new volume release in June and Ritz needs time for all the extra work that comes with it.
Next releases should be Shinohayu and Toki but then hopefully we can have a few more MakoMeshi chapters done during Saki's break.
This might also be a good chance to catch up on the other series so all folders have been updated with the most recent chapters and a new folder has been created for MakoMeshi.
Saki
Shinohayu
Toki
MakoMeshi
Saki Achiga-hen
Saki Biyori
Saki Biyori (chapters 33-76 End) 