There are only a few interesting changes in this release.
The first is that you can now download a png without creating a Shot url, and thus use Page Shot without uploading the content to a server.
The second is that a bug when resizing selections was fixed. Previously, if you resized the selection and saved the shot, the shot would still be made with the old selection.
Note that the add-on for this release has version 4.3, while the server has version 4.4. This is because we discovered a bug in the server that needed fixing after preparing the 4.3 release, but the 4.3 add-on did not need any changes.
You can see the full changelog here: