So do all activists, and that is the problem with stable releases. Nobody has any real interest in polishing the "new forthcoming release" like 19.07, as the master has already some additional new features, right after the branching.
When the release branch is branched off master, it is fresh and up-to-date, but it soon falls behind. The longer it takes to publish the release binaries, the staler (more stale?) the release is.
The goal of the LEDE fork was to do a release every six months, but since the merge back to OpenWrt it looks like we have fallen back to the old "one release every two years" regime that was the sin of the old OpenWrt in 2010-2015.
We will never be able to perfect all these nice features for the next version, so we should accept that there are new, small features in every frequent release. And do a new release more frequently, like e.g. the major browsers do.
19.07 was in pretty ok shape in June, but as there are apparently no eager "release managers" among the core developers at the moment, the production of even rc binaries for 1907 has stalled, despite the branching in June and a buildbot crunching images and packages daily.
The release manager used to be @blogic a few years ago, then @stintel for a few releases, but right now @jow has pretty much been the only one to show activity regarding the 19.07 release. The discussion on the devel mailing list is heating up...
https://www.mail-archive.com/openwrt-devel@lists.openwrt.org/msg48686.html
And as there is now talk about backporting some new features (javascript LuCI, wpa3) from master to 19.07, the process may take even longer...
It would have been nice to have 19.07 with the June 2019 features already released, and then a new 19.12 / 20.01 with the newest stuff as the next release. But no idea what will actually happen.