RGB gray (re)works like in 5.8 (same code), that doesn’t mean it works well. For me it’s just an arrangement - and not an auto WB.
As for Temperature Correlation, I refuse (as a designer) to make it work in TIF/JPG mode, although I tried…
Thank you for testing 
Jacques
Wow! The new Tone Equalizer in the Exposure tab has just changed my life forever! Amazing! Thanks! 
Hello @jdc
Just tested the blend modes in the Local adjustements options.
Very powerful indeed!
Thanks a lot for this implementation 
Thanks to everyone for testing! The positive responses give us confidence that 5.10 is ready for release. There will be an official announcement in a few days.
not sure if anybody else faced this problem but installing RC1 Windows11 got me a malware alert both in .exe and RawTherapee.exe and Kaspersky removed both the files. - just FYI
Hello @mehkriakram
I have installed the first release candidate on Windows 11 and I run the Kaskpersky suite as well.
No problem on my setup…
As an aside, generally, on Windows, whenever I try some open source software, before installing, I even test it with VirusTotal 1. Nowdays I have stopped doing so because there are always plenty of “false positive”…
Shared the news on dgrin. A very small forum, but maybe some will try RT.