The Drupal team is currently discussing the inclusion of the
picture markup pattern in the Drupal 8 core. They seem to be leaning towards including the proposed element itself, rather than an equivalent pattern using Picturefill. I’ve let them know that doing so may be a bit preemptive at this time. If nothing else, this further proves the developer community’s interest in this solution.
I’ve asked Jesse Beach to act as the Responsive Image Community Group’s primary contact with the Drupal team to help field implementation questions and feedback.
The Drupal team working on this issue includes (among many) John Albin Wilkins, Jeff Burnz, Lewis Nyman, Tim Plunkett, Peter Droogmans, Théodore Biadala, Rob Wierzbowski, Wim Leers, medden, Gábor Hojtsy, Sam Richard, Alex Bronstein, Marc Drummond, Bojhan, and Angie Byron.
I’m really looking forward to hashing out some real-world issues, especially on such a large scale project.