http://www.wowwiki.com/Festergut , everyone should take note that in 25 man It is a MUST that each player do 7500 DPS or you will lose the fight. The HP on the boss is 43mil+ and the enrage timer is 5 min. PLEASE review the fights and see what adjustments you must make to meet the demands of the new wing. OH, this is for 25 man Normal mode (God help us in Heroic mode) lol.
Healing will also become and issue and Spike damage (and alot of it) plus DoT's are gonna have to be healed REAL quick. Here is a reference for druid calculaters and specs and necessary CAPS you must meet. healing demands,:http://www.plusheal.com/viewtopic.php?f=5&t=4752&start=0&st=0&sk=t&sd=a
Any questions feel free to ask and remember "The only stupid question is the one you don't ask".
Here is another site in WoWhead to view loot table in 10-25 mode reg and heroic:
http://www.wowhead.com/?npc=36626 and some more info on damage and strat.