Announcements of releases, important changes and so on, are made here on the website and sometimes on the erlang-questions mailing list.
If you find a bug, poor default, missing feature or find any part of the API inconvenient, please file an issue on Github. If in doubt if it’s a kernel or eclipse problem, report it on eclipse. If possible, try to explain what behavior you expected and why. Bonus points for contributing failing test cases, and of course the best contributions are pull requests.
The code is hosted at GitHub, https://github.com/erlang/erlide_eclipse and https://github.com/erlang/erlide_kernel.
See the Eclipse developer documentation for more details.