After a release:

1) Delete release.xml and release.digest (wait for their regenration)
2) Fix all version error markers
3) Fix Installer.product version
4) Fix package export versions in edit and editor plugins


For a Java version change:

1) Check all BREEs
2) Adjust the Platform repo in org.eclipse.oomph.releng.target
3) Adjust the descriptor-??.txt files in /org.eclipse.oomph.extractor/Concat
4) Adjust Installer.p2.inf