The list of installable features has been extended by one:
While hardening the new runtime (OTDRE), capability was added to automatically detect which variant should be used (OTDRE / OTRE). This obsoletes a command line option that was necessary before.
Improving the debugging experience was the main theme during the Oxygen cycle.
According to plan, stepping and display of local variables in code affected by bytecode weaving was improved. More is still planned for Photon.
Debugging performance was significantly improved: previously, the OT/J debugger used synthetic method breakpoints for its inner working. As of Oxygen these have been replaced by less problematic line breakpoints.
The debugger has been integrated with OTDRE's runtime bytecode weaving. Previously, class changes at runtime caused broken stepping experience using outdated line information. This has been fixed.
The build has been moved to a new HIPP, incl. some due clean-up.
Bugzilla Balance since the 2.5.0 release
43 bugs and enhancements fixed
3 bugs resolved as worksforme
81 remaining open bugs (approximately stable since 2.5.0)
Of these, 13 have been filed after the 2.5.0 release
19 open enhancement requests