Here is the new unit selection screen, with the fluff image feature. Fluff pictures are not included in MegaMek, but you can add your own in the "data/images/fluff" folder.

Here is what a movement command looks like. The numbers indicate the MP used and the color indicates whether you are walking, running, or jumping.

When you let yourself get swarmed, that how it will look. The red text over the swarmed unit will signal that it is swarmed. 

Here is a screenshot of a game underway in Windows XP. Notice the jungle terrain.

Here is a screenshot of the main lobby where you set up a game. You can assign a paint scheme to your units and portraits for your pilots.

Here is a screenshot of the new isometric view, available in the development version.