From DigitalTVEurope:
UK TV technical standards body the DTG has introduced support for the forthcoming Freeview Play connected TV service in the latest edition of the D-Book, the official document for digital-terrestrial TV technology guidelines in the UK.D-Book 8 includes a set of technology foundations for the new service, according to the DTG.
Freeview Play is to be based on a technical specification that combines Freeview HD with the pan-European HbbTV standard for hybrid broadband-broadcast services. Elements include a consolidated cross-platform, enhanced metadata stream, rules and guidelines on the UI and presentation of content and players, navigation principles including one-click access to live TV and the prominent display of core content across both linear and non-linear environments and simple on-screen branding. According to Digital UK’s guidelines, it should also provide opportunities for Freeview broadcasters to launch on-demand services alongside those provided by public service broadcasters.
The technology platform for the first profile of the platform is based on a common HTML5 application environment, a broadcast profile based on D-Book 7, including MHEG, the incorporation of DVB-DASH adaptive bit-rate streaming, an aggregated source of metadata providing forwards and backwards EPG with links to player content and a search API across both on-demand and broadcast content. The second profile is based on D-Book 8, includes HbbTV 2.0, Microsoft PlayReady DRM and other functionality...
http://www.digitaltveurope.net/345202/dtg-issues-adds-freeview-play-support-with-d-book-8-release/