TMI Early Access Build #4 is here. Here is information about what is included:

Major Changes

• NEW! 3D main menu showing the exterior of Three Mile Island Nuclear Generating Station - including the plant's four iconic cooling towers, various site buildings, and animated water. Foliage to be added to terrain in a future update.
• Updated game's title, logo and application icon.

Minor Fixes

• Fixed the game's title in the credits, which was previously incorrect.
• A few performance fixes (NOTE: New menu may or may not affect this.)