Jolla has announced a new major version of Sailfish OS at the Mobile World Congress, which will simply be known as Sailfish 3. The new version will feature an updated application store, support for 4G, VoLTE and should have noticeable performance improvements. Sailfish 3 will also be made available for more devices.
https://www.notebookcheck.net/Jolla-announces-Sailfish-3-OS-and-expansion-to-new-devices.286728.0.html