I noticed that the 18.06.2 and 18.06.4 build SHA256sums are now GPG-signed by the "OpenWrt Build System (PGP key for unattended snapshot builds)" key. Before, I believe the 18.06.2 builds were signed with a release key. Why are these release builds being signed with a snapshot build key? Was there a policy change to use this key from now on?
I originally posted this on the /r/openwrt subreddit here, but did not get any replies. If someone could point me in the right direction on this it would be appreciated.