The formal notification that the development for the next major version 5.3.0 is now frozen. The focus has to be on testing the master branch.
Also, the master branch should not get commits with new features till the branch 5.3 is created, expected to happen in 2-4 weeks, a matter of how testing goes on. Meanwhile, the commits with new features in the C code can be pushed to personal branches, pull requests can still be done, but they will be merged after branching 5.3.
It can still be done commits with documentation improvements, enhancements to related tool (e.g., kamctl, kamcmd) and exporting missing KEMI functions to the modules already exporting most of the other functions (done for previous releases, because likely that was a fail to notice, all functions should be exported for a module at the same time).
Once the branch 5.3 is created, new features can be pushed again to master branch as usual. From that moment, the v5.3.0 should be out very soon, time used for further testing but also preparing the release of packages.
If someone is not sure if a commit brings a new feature, just make a pull request and it can be discussed there on github portal or via sr-dev mailing list.
A summary of what is new in upcoming 5.3 is collected at:
Upgrade guidelines will be collected at:
Everyone is more than welcome to contribute to the above wiki pages,
especially to the upgrade guidelines, to help everyone else during the
migration process from v5.2.x to 5.3.x.
Thanks for flying Kamailio!