I posted a message on 10-June-2013 and Yuri followed up with one last week. But in case anyone missed it, a Wikipedia Zero RFC for use of Edge Side Includes (ESI) and, where appropriate, JavaScript is posted at https://www.mediawiki.org/wiki/Requests_for_comment/Zero_Architecture#Cache_... .

We'd like to wrap up comments within the next few days.

Thanks! -Adam