I've spent the last couple of days trying to wreck WOM v1.2. Each time there's been an RC, I take a shot at destroying it -- and have succeeded in doing so. Hence why we're in April and still monkeying with v1.2.
I won't go through all the new features and changes in v1.2 over v1.11 but here are the things I think people will notice very quickly:
1. Framerate is substantially faster.
2. End turn performance is substantially faster.
3. Memory use has been drastically reduced.
Once v1.2 is out the door, we move onto the v1.3 track which is almost purely a feature upgrade to the game.