Zen is
not (yet) announced for Fall. Here's the full image (found it on 2ch).
You can see it describing the timeline in the series (物語シリーズ年鑑), not saying when it will air:
First series
- Kizumonogatari (Spring vacation)
- Nekomonogatari Kuro (Golden week)
- Bakemonogatari (Spring to Summer)
- Nisemonogatari (Summer vacation)
Second series
- Neko White, etc. (Fall and later)