DITU Demo 0.4.0 UP1 Will provide:

Improved Deep in Space mode, 

updated Crafts and improvements, 

Redesigned save script, New events, 

Addition of radiation (Experimentally, may not work in the plot), 

improvement and tuning of the car. 

I won't be able to list a BUNCH of changes and improvements in the game yet, but there are quite a lot of them.