We are happy to announce the release of Qt Creator 3.4.1. It includes fixes for the following regressions: manually registered documentation on Windows was deregistered again on restart, and disabling plugins could disable most of the About Plugins dialog.
You find a more complete list of fixes in our change log.
You find the opensource version on the Qt download page, and Enterprise packages on the Qt Account Portal. Please post issues in our bug tracker. You also can find us on IRC on #qt-creator on irc.freenode.net, and on the Qt Creator mailing list.