Feb 21st 2009 5:55PM There isnt a hard cap, no. The soft cap would be 33%, enough to get you from 1.5s GCD's to 1s GCDs...but haste still has value on other spells if they are longer then 1.5s.
Its like the 'yellow' hit cap melee has, kinda :)
Dec 12th 2008 6:52PM It should be known, that currently the Lightweave Embroidery is the best cloak enchant in game for Spellcasters, adding approximately 60 to 90 dps This is more then the 23 haste cloak enchant by quite a bit until about ~2500 spellpower (for mages) and ~2800 for shadow priests. I would guess Aff locks it would be insanely better then haste at all.
Just not alot of people have done the math, or are not aware.
Now you are enlightened :)
Dec 7th 2008 9:44AM It might be wise to post some more about the hit cap
Effectively in a 25 man situation, you will likely only need 262 HR. This gives you 10% out of the needed 17%
1% Draenai Racial
3% Shadow Priest/Boomkin ImpFF
Will cap you up to the rest. Obviously you will have to modify this if you dont have a SP/Boomkin
(I dont include the probably not intended bonus to FFB, plus not capping Fire = big dps loss when you miss with Pyro/LB AND have to restack scorch)
Nov 10th 2008 8:22AM mmmm, Blizzcon doggy.