This just got reported by several news agencies and was also flashing on the prompters on Japanese TV. Studio Ghibli announced that Hayao Miyazaki will no longer make any "long", or feature-length movies. I suppose that allows him to keep making short films if he wants to, but the last feature length movie we'll see from him is Kaze Tachinu.
Source: http://www3.nhk.or.jp/news/html/20130901/j60950410000.html
Edit: if a mod could fix the thread title, thanks.
Source: http://www3.nhk.or.jp/news/html/20130901/j60950410000.html
Edit: if a mod could fix the thread title, thanks.