What are the .Net FrameWork versions and Differences

There are different versions in .net Framework 1.0, 1.1, 2.0, 3.0, 3.5, 4.0 and 4.5 versions.

Main Differences of those is 

The first difference of  1.1 and 2.0 :

Next one is 2.0 and 3.0:

Next difference is 3.0 and 3.5 :

Next difference is 3.5 and 4.0 :

Next difference is 4.0 and 4.5