In addition to the AP reformatting and price increases, it seems that Disney is starting to seriously consider tiered pricing for individual tickets, based on the anticipated crowds:
http://fortune.com/2015/10/04/disney-pricing-change/?xid=yahoo_fortune
Hong Kong Disneyland has had a 3-tiered pricing system in place since about 2006, so this wouldn't be entirely new. However, I suspect it would be much more difficult to implement in the US, where multi-day tickets are far more common, and more likely to include multiple tiers within a single visit.
Although Disney has done some surveys about this before, I find it very curious that Fortune, Business Insider, and the Wall Street Journal all posted articles today (of all days) about the tiered concept. It sounds like we've only heard about some of the ticket changes that are coming...