The conflict within TC 39 spilled into the public domain in October 2007 when Microsoft's Internet Explorer platform architect Chris Wilson criticized ES 4 for trying to introduce too many changes.
While Microsoft congratulates itself over its apparent victory, Adobe is putting on a brave face. In response to questions over the future of ActionScript, Adobe community expert Dan Smith indicated (see comments) that it would track the new ES Harmony specifications. But he also said that key features from ES4 that have now been abandoned will remain. These include namespaces, packages and classes.
Adobe does not appear to be against cutting back on ES 4 features in principle. Lars Hansen, Adobe's representative on TC 39, proposed cutting back on ES 4 features back in February 2008.®