We signed the Mac libraries and app with hardened runtime for RC2. This was required for notarising Mac app - Bug 549814 and is a required for macOS 10.15. There is blocker issue caused by this on Mac - Eclipse doesn't start after update. Details onBug 550674.
We have fixed the issue and need to trigger a new I-build for RC2.
Thanks & Regards, Lakshmi P Shanmugam, Eclipse Platform Co-lead, India Software Lab, Bangalore