I have tried to install the enhanced graphics update. I installed it then ran it. Couldn't get past the DF splash screen. I tried re-starting my machine, still couldn't get past the DF splash screen. It kept minimizing to the taskbar and re-starting again when I try to bring it back up. I then un-installed DF, re-started my machine and re-installed from the windows store. Again, couldn't get past the splash screen. Re-started my machine, finally DF managed to load up ok. I entered a game, no enhanced graphics. I uninstalled, re-started, re-installed and tried again, still no enhanced graphics. I am running Windows 8.1 on a quad core 2.2-3.2 Ghz i7 processor with 8Gb ram, 1760 Mb HD graphics card.
It would seem that some folks aren't having a problem with the new update, but I still seem to be getting the old update from the store, even though the store told me this was a new update.