Larger profile beetle. Cast it with a plop and watch summer trout cruise out from cover to eat it!
Fathead 2.0 has a better silhouette from the fish's prospective, with the oval shape more pronounced.
The new foam body floats better and longer, and it lands "indicator-up" on every cast, regardless of size.
The most important new feature is the hook. I use the TMC 2487 Scud Hook. The hook gap is astounding, perhaps three times that of a standard or heavy wire dry fly hook." Dennis Potter