As you can see by the touchpad in the center console, there's also handwriting support. (topspeed.com)
However, I am surprised that handwriting support didn't make it to the list. (goodereader.com)
The new version of the OS, which was first announced at Google's IO conference, will bring numerous features like handwriting support and a full QWERTY keyboard, the ability for watchfaces to display info from other apps and one - touch smart replies based on the context of your incoming messages, as well as a Play Store exclusively for Android Wear. (thenextweb.com)