Yes, BridgePoint ships with Eclipse Mars (4.5). The development team has considered a move to Eclipse Oxygen (along with a simultaneous update to Java 9), but that is not an official project yet. From a high level, the project will include building the BP plugins in an Oxygen development environment, rinse and repeat until the build is clean. Then run all Junit tests and fix problems until those are clean again. Then update the build packaging so that it packages Oxygen instead of Mars. And run testing on Mac, Linux, and Windows.
When we’ve made an eclipse migration in the past, it has not been terribly challenging, but it does take some time and of course we don’t want to have degraded functionality in the process, so we must test thoroughly.