Major new release which improves clustering robustness, especially when dealing with slow Followers. New features include a built in web-based console (at localhost:4001/console) and comprehensive use of CRC32 for even strong data integrity guarantees. Lots of other bug fixes and improvements under the covers.
One application that comes up over and over again -- wanting relational modeling, along with HA, but with low operational costs. People sometimes start with Postgres, then need to set up HA, and find it's a lot of work. They realize that their data set requirements are not huge, don't need fancy features, so start to think Postgres is overkill. That's what Replicated found.
For a project where sqlite is good enough, just using it plus the amazing sqlite rsync command on a cron job gives you pretty amazing capabilities.
When/if you outgrow that and/or need something more, like GIS capabilities, Postgres is the choice.
rqlite sits somewhere between, and I'm not sure how I'd actually use it?