In case you haven't heard, there have been talks last year that Mockingjay will be split into two parts in the big screen as what other major franchises were like Harry Potter and Twilight. According to Deadline, the first part of Mockingjay will be released on November 21, 2014 and last part would be on the 20th of November 2015. In case you don't know, Catching Fire will be released on the November 22, 2013. So basically, the last three films will have the same month in terms of their release dates.
Just so you know you missed it, Catching Fire has already have its Plutarch Heavensbee in the person of Philip Seymour Hoffman. I know, they have the same initials and coincidentally, Jena Malone also has the same initials as Johanna Mason. As of today, Jena Malone is not officially confirmed to play Johanna. Finnick, Mags, and others are yet to be cast too. Let's just wait until Lionsgate releases another statement publicly.