1.4 is quite a huge update.
Aside from the thousands of minor improvements and fixes, a couple of more bigger features are in this release:
First, there are the user privileges, which should be finalized in this release.
Then, perhaps even a bigger update, is that files and pictures can be saved into the database. This has a few implications:
Some people may want to store even all the pictures into the database - if you want a real easy site management. There will be a quite a minor performance penalty if all the pictures are stored into the database.
The setting that affects how files are handled is in Project Properties/Cache.