Hell Unleashed 2.6 is coming in possibly 1-2 months, most likely the biggest patch in the history of the mod. For those who don't know, HU is a multiplayer based mod, focused around epic bossfights. Game mechanics are a little bit similar to clod, but the game plays much faster, and its much more fun, tons of new areas, bosses, skills, items added.
Most boss AIs are reworked, they wont just sit there and melee the tank, they will be a lot more exciting.
Huge item changes. Previously, there wasnt much to do about scaling dmg on a phys build other than grabbing a weapon with as much dmg as possible, now crit chance, crit dmg, and +%stat mods will be a thing on item, allowing you to scale your damage. Spellcasters also didnt have much to scale dmg, now energy will be a really useful stat to scale spell dmg, like in mxl. Item tempering is introduced, they will be kind of similar to how mystic orbs work in mxl, allowing you to fill missing stats on your gear, and some will be purchasable from vendors, and some from bosses only, i cant wait to know more about this new mechanic

Mana mechanics are also reworked. Classes will now have fixed 100 max mana, and mana regen. There will be skills with 0 or really low mana cost, and then big skills with big mana costs. No more mana pot chugging on attack builds at very early levels

There will be items that give you more max mana, mana regen, or reduced mana costs, those will probably be best for casters to use big skills more frequently.
This is all the spoilers that i know of, so far, and I am very excited about them.
I'll come back if/when we know more, and i hope i got you interested, if you never heard about the mod before. Having more ppl play this is always good, because you cant just sit in your private game alone, because soloing big bosses like actbosses is extremely difficult, if not straight impossible.