I would like to share here a mail sent to factory mailing list, that I think it’s interesting to spread!!
Hello all,
the release of Leap 42.1 is coming soon, we are approaching the RC phase. So this is the best time for you to do additional testing!
Please download the latest build from https://openqa.opensuse.org/
(Click: build number-> green dot -> tab Logs& Assets -> Assets)
We have prepared a spreadsheet were you can see a list of testcases that could be performed.
You can add yourself to the spreadsheet and give feedback about test results. Add the name of the build and mark it green/amber/red according to your test results and add a link to bugzilla in case you have found a bug.
For reference see the spreadsheet for openSUSE 13.2: **
https://docs.google.com/spreadsheets/d/1l5x6zvGJc4PW4QTI2gJm1zZS0B2pa-tP1oc9mSZLeCs/edit#gid=0
**If you can think of additional/different Testscenarios and Testcases feel free to add these to the spreadsheet as well.
Thanks a lot for your help!
Marita
Make a great release with your help!! 
For me I was actually unclear how I could help as “just” a user. I must say though that I was mighty impressed with everything. The new look is great and all seemed to work even Nvidia drivers.