I have pushed v1.5.1rc1:
You can flash this version by picking the “beta” option when ticking the advanced features checkbox in QGroundControl. Please refer to the change notes in the release for a detailed rundown.
There are still commits coming into 1.5.1 but nothing major in terms of the core system performance:
So it would be good to get as much testing in as possible. Our test plan is published here: