After upgrade to a new version, I can click "Papers" on the upper-left corner to see a pull down menu, which shows the current version number. If I hover the mouse on the "i" icon, it will show a popup window about the releasing time. I think it will be helpful if there is a release note to let us know what has changed and what is new in this version. Right now, I could not find the release note anywhere.
I agree with this - would love to see this feature as well. Find this information very useful as the app is updated :)