In this pre-release we removed the WebApp version from the login screen.
We have disabled cancellation of attachments that are being uploaded due to the fact cancelled attachments were still being sent. This functionality will be enabled again and enhanced in a future version.
To track the development of this functionality refer to KW-2575.
The complete changelog can be found here.
Note: this pre-release will be available as a final version over the course of this week.