Backwards compatibility? Following MojoHaus' standards? (officially this project still is part of Mojo, despite the fact that I never followed any of their processes; the new maintainer(s) are free to do whatever they want though)
No, because this plugin is not an "official" plugin.
(BTW, the Steering Committee decided this summer that we don't want such "official" plugins that would be maintained by third-parties or individuals, so the gwt-gradle-plugin is staying at de.richsource.gradle.plugins, this one at org.codehaus.mojo –or anywhere else, if it chooses to rename– and my other Maven Plugin for GWT at net.ltgt.gwt.maven)
BTW, we're going to migrate the GWT samples to the net.ltgt.gwt.maven plugin; it'll make them easier to maintain and release as we currently have a chicken and egg problem: the plugin depends on a specific version of GWT, that must thus be released at the time of cutting a release of the plugin, but the samples are released at the same time as GWT itself.