Source:

A lot of people asked what the 8.8 model change of the E-100 is. Well, here’s a comparison, courtesy of Orkel

– the hull becomes a bit longer
– tracks are slightly moved (up and forward)

Minor changes that make no real difference, including
-tracks moved forward, protecting the LFP/side armor weak spot a bit better
-very slightly lower
-upper section of UFP is better angled now (?)

In the end, still no real difference, should play as usual.