Netflix's HTML5 Video Playback UI

techblog.netflix.com

Does this mean there will finally be Linux support? There is no mention of how DRM will be implemented.

Edit: One of the older blog posts (link in this one) discusses HTML5 Premium Video Extensions

No there won't be. Netflix requires "HTML5" playback to use their proprietary DRM plug-in (EME CDM).

On mailing lists they've said they don't give a damn about GNU/Linux support.

They will support Google's closed flavors of Linux: non-AOSP Android builds and closed builds of ChromeOS with Google WideVine DRM plug-ins.