as stated in a mail from Nick today

The parent pom in master branch (for use with the forthcoming 4.1.x
branch) is no longer Beta3, but CR1.

https://github.com/jbosstools/jbosstools-build/pull/98/files

Please update your project's root pom accordingly to use the latest
version, and run a local build to verify you can build against this
updated version (and also the latest linked Target Platform, which
should be Beta1, containing Kepler R bits).

Thanks!