Official patches and mods for Heroes 4 by Equlibris.

I installed everything – it works perfectly. I just didn't find anything new from Equilibrium in the editor. It complained about the editor during installation, but it was installed anyway. Two Equilibrium launch icons appeared – a regular one and a tournament one – both work – I don't feel any difference.
The Equilibrium website mentioned new buildings and spells – how can I check if I have everything for a complete game experience?