The Eclipse 2020-12 (4.18) endgame plan is now available: https://www.eclipse.org/eclipse/development/plans/freeze_plan_4_18.php
Please read it carefully and follow the fix pass rules of engagement. All fixes submitted must have a project lead or PMC vote on the bug report,
Be aware that no API changes or feature work is allowed after RC1 unless the PMC approves it.
We will open master for the 2021-03 (4.19) release after RC2.