None of the devs have really been doing much to IC2 recently
From a user perspective, the only things that have changed since the IC2 experimental team took over are new textures, cutter + forge hammer, metal former, and a bunch of new things nobody knows how to use because they aren't documented anywhere. The IC2 team seriously needs to consider bringing in someone who is willing to document everything somewhere. Maybe even an in-game guide of some sort? I'm sure that would be helpful.
I know there is a lot of behind the scenes stuff and bugfixing going on, but it might as well be invisible. The IC2 e-net practically has EE3 syndrome at this point, it's "being worked on" for years without any notable releases. Also, it's kinda hilarious to me that EE3 has actually got a working dynamic emc system release before IC2 has a working e-net.