Walt Disney World and Disneyland increased ticket prices over the weekend. I have full coverage of the increases up right now at P2B Nation: WDWorld Traveler: New Ticket Price Increases and Structure for Disney Parks.
Here is what the increase looks like for multiple day one-park admissions to Walt Disney World...
Disney also rolled out the rumored tiered pricing for one day admissions, breaking the calendar down into value/regular/peak seasons. It's all covered in the P2B Article.
Don't forget to also check out Touring Plans for full coverage of everything related to the price increase.