Hello, lovely TAG members. Would you mind reading over https://w3c.github.io/webappsec/specs/upgrade/ in your copious free time, and providing some feedback to the WG?

We're shipping an initial cut at this in Chrome 43, so I expect implementation experience to help shape the near-term future of the feature. It would be excellent to get your take on the broader problem of migration to HTTPS to see what else we could be doing to address it.