Kena: Bridge of Spirits update 1.13 was released today by Ember Labs. You can find out the complete patch notes for this update from here.
The last major patch appears to be related to new Halloween content and the developers have been silent since then. You can learn more about the limited edition Halloween Rot hats and where to find them, but the event has been disabled by now. In the new patch, there are mostly crash fixes. See the details below, or view them on the official website.