According to another Disney theme park site (MousePlanet)'s Facebook page, "We have nothing official from Disney, but are seeing several indications that ticket prices are going up effective June 2 or 3. If you need to buy tickets or buy / renew an AP, consider this fair warning."
Here's the link to their Facebook page.
Not sure if this is just a rumor or if there is substance behind it, but if you are planning a visit before the end of this year or are planning to renew your annual passes, you might want to do it in the next couple of days.
From an earlier discussion I posted on this forum a few days ago:
In case people don't remember, last May Disney announced their price increase late on Friday afternoon and the increase was effective at midnight on Saturday/Sunday, not giving people much time to buy tickets for visits in the upcoming months before the increase took effect.
The last increases in ticket prices have taken place in May 2012, June 2011, August 2010, August 2009, August 2008, September 2007, and September 2006. The last year there was no price increase at all during the year was 2001, after the terrorist attacks and plunge in the domestic economy (and in travel spending). In 2005 and 2006, they actually raised prices two different times in the same year.
Take a look at the link to the Wikipedia article I linked in the original post (Disneyland - Tickets)