I just installed the 1.41 Beta.... and actually I didn't notice that there was a 1.39 release back in mid March !! (I check this forum now and then, and I asked about better parking mode, and I still missed it, but maybe SG needs to send an email notification).
So I tested the 30fps setup. Which worked well. the size of the file isn't that big and not much different from the 5fps on the 1.37 firmware, which is good. The addition of sound is a good thing (not mentioned in the release notes!
I also changed the parking mode G-sensitivity to high
As per the new beta, the main addition is "Add - Configuration changes to suit mobile APP" which i am not sure what that means. I connected the Novacam app and i don't see anything different.
Other than that....nothing else I could see. Solid.