As I mentioned in an earlier post, officially supported OpenJDK builds for non-Linux platforms have been notoriously hard to come by in the past, at least until Azul started their Zulu builds in 2013. Unofficial community builds are also available from the ojdkbuild project on Github.
Today Redhat announced that their OpenJDK offerings now include builds for the Windows platform as well.
After Google decided to use OpenJDK in Android N, I guess this is another strong indicator of OpenJDK’s value and increasingly wide adoption.