Software shows quite nicely also the new 2.6 in master:
There is both the old-style v1 version, in addition to the 2.6 version.
And if trying to install the 2.6, it also points out the need for sqlite:
Not sure what you mean by the "go outside that walled garden".
Ps. anything in the current master will automatically be in the new 20.0x release series, once that gets branched off at some point.