Should be possible to look at the changelog of a build from the IDE, preferably using the Diff window for details.
Unclear how different SCMs should be supported.
Basic impl in cdev #24795035b83e with support for Subversion (HTTP remote access only).
Integrated into 'main-golden', will be available in build *200903170201* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
User: Jesse Glick <firstname.lastname@example.org>
Log: #158032: changelog browsing including Diff window.