So a few news items from the stream:
(some may be already known, I didn't follow all news to the point)

The license model for devices like the Xperia X switched from yearly to per device, so once bought you can use sailfish with all updates till you destroy your phone.

All Xperia XA2 devices will be supported

Aliendalvik with Android 8.1 comes for the XA2 devices.
Eventually also for Xperia X

Sailfish X now has a free trial available in the jolla shop today!