ECF had release 3.14.8 as part of 2020-06. There was a problem with the
karaf-features.xml (actually the problem was with the maven central
deployment of a few bundles), and so I just released version 3.14.12
with fixes to karaf-features.xml and some small build changes to allow
the use of maven central 'most recent' versions in karaf-features.xml.
So, upshot, ECF just released version 3.14.12. See  to download.