You should hold off doing in-place upgrades using "do-release-upgrade" until 16.04.1 (due August/September). However, you can also "upgrade" your stack by buil

You should hold off doing in-place upgrades using "do-release-upgrade" until 16.04.1 (due August/September). However, you can also "upgrade" your stack by building a new image using 16.04 from scratch, and that doesn't need to wait until 16.04.1.