I run LinuxMint LMDE on my laptop, update 3, with what looks like Gnome2.
Saw this update 4 come along and almost installed it until I read that it will switch me to Gnome 3 shell.
UGH!!!! Tried it already and was the reason I switched from pure Debian to Mint.
So, I have a VirtualBox VM with LinuxMint LMDE, but with LXDE - which I would have to switch to if I installed this Update 4 on my base laptop.
So.... installed Update 4 on my Virtual LMDE/LXDE and am left with an unusable system. No desktop at all - am presented with a terminal only command line interface. Did startx, aborted! Did init 5, aborted!
I went thru the total install until it said "completed" and then did halt to shutdown the system. Restart this AM is no LXDE, no Gnome, no Cinnamon, no Mate, no GUI interface.
Yeah, sure I accepted all the requests to replace config files during the install - but this still shouldn't leave me with a junked system.
I am now very unhappy with Mint - who needs this aggravation. Might just go back to pure Debian.
Any Mint developers have a clue why this happened.