While the PR has been merged, we have not officially released the firmware or the corresponding App yet, because we are making a few minor improvements like adding mqtt user name / password support. Also we need to do final testing on all platforms (OS 2.3, OS 3.0, OSPi) before officially announcing it and releasing the compiled firmware files. Should be done in the next few days.
This version will be numbered 2.1.9(4), not 2.2.0, because it doesn’t involve major changes to configuration files or flash layout.