This is the first formal baseline release of the device tree specification. This document is a first iteration of ePAPR 1.1 and picks up where it left off in 2012.
We plan to make the next release, v1.0 once we have enough contributions to make a major release. We would like it to be up to date with current core DT bindings used by the Linux kernel.
A second major release should then cover new features. Once agreed by the TSC, the timeline for planned future releases will be shown here and you can always find the latest release, as well as all older releases, in our GitHub repository: Devicetree Specification release repository