I noticed that this lacks a proper 1.12.1 update since I know the devs here always play cutting edge I was wondering if an update is in the works or if it has not been requested.

I updated the build.properties to reflect my target version of minecraft and forge and did a gradle build. It no longer complains on either the server or client sides about the wrong version. Both server and client launch and I can see the mods listed. Will post here if I find any problems in-game.

The 1.12 version of BoP works just fine on 1.12.1. All that needs to be done is to mark it as 1.12.1 on CurseForge.