I bought a Gen 7 DFI setup when it first came out. I've heard they made a few upgrades to the system since then... can anyone tell me what they are?

 

If you bought it shortly after it came out, there are too many updates to list here...

You can download the updated software package from Here. It should work just fine with your older ECM.

Here is a description of the lastest upgrade, version 4.0.

Its around $200 to get your ECM and firmware updated to the latest version.