This is a bug fix release.
Thanks to the feedback and collaboration from one of our customers (Johnson & Johnson) we have finally identified the source of a weird incongruence between dates in Gantt, project tree and task editor.
A working day calculation error could happen in cases when the time zone of the browser and the one of the server were not the same, and the project tree got edited in the Gantt window. This has been fixed, and the local time offset is always included allowing for the same project to be edited coherently in time from different time-zones.
For users with teams spanned across several time-zones this upgrade is mandatory.