recently informed CVG of yet another batch of changes the developer is incorporating into Fable 3 -- the most notable being the game's completely overhauled Will (see: Magic) system. Whenever a player learns a new spell, they'll automatically be able to charge it up to its maximum level without investing additional points into it. As a player levels up in a particular spell, they'll be able to charge it much more quickly, even to the point of "insta-cast" -- a boon for those who found Fable 2's slow-charging magic to be prohibitively unwieldy.
In addition, young mages will be able to mix and match their spells in up to 20 different combinations -- for instance, Vortex plus Fireball equals Fire Vortex, a spell that's just as delightful and destructive as it sounds. For more details on the game's overhauled arcane arts, check out Atkins' discussion with CVG.