Rode with 5.0 today, only issue still remaining, but it wasn't mentioned in the release notes as solved, is the Garmin Edge Remote issue.
If i turned off Phone connection it worked flawlessly, otherwise sporadic disconnects (red blinking light).
The connection with my DI2 is also dropping and reconnecting every 3-4 minutes with the 5.0 firmware.
I've got the R8070 version with the EW-WU111. Connecting my phone via bluetooth or disabling the phone connection doesn't solve the problem.