@msff-amman-Itofficer said in LibreOffice 5.3 Released for Cloud:

I'm more interested when will they release the VM/container that will allow users to collaborate and edit files like office 365 on the web.

I played with the WebDav file sharing element inside the desktop software and it was meh.

That's been out for a while. Three months at least.

From the OPs link

New Toolbar (Notebook mode as they call it) :
alt text

Sidebar mode:
alt text

Now that's pretty cool.