While they've pushed back the air dates for season 7, the DVD/Blu Ray release for season 6 has been moved up to November 15th. That's 4-5 months earlier than they've done in the past.
Season 6 DVD/Blu Ray Box Set - Complete Details
Some nice surprises with the extras, particularly if you're an Ian McShane fan. My personal favorite is Max Von Sydow narrating the "History and Lore" segment for the battle between the children of the forest and the first men.
Some notables on the Blu Ray edition:
Histories and Lore – Learn about the mythology of Westeros and Essos as told from the varying perspectives of the characters themselves in 18 history pieces.
· War of the Ninepenny Kings: narrated by Brother Ray (Ian McShane)
· Robert’s Rebellion: narrated by Jaime Lannister (Nikolaj Coster-Waldau)
· Children of the Forest vs. the First Men: narrated by the Three-Eyed Raven (Max von Sydow)
· Oldtown: narrated by Grand Maester Pycelle (Julian Glover) and Qyburn (Anton Lesser)
· House Dayne: narrated by Young Ned Stark (Robert Aramayo)
· The Little Birds: narrated by Lord Varys (Conleth Hill)
· House Tarly: narrated by Randyll Tarly (James Faulkner)
· Riverrun: narrated by Brynden ‘the Blackfish’ Tully (Clive Russell)
· Great Sept of Baelor: narrated by the High Sparrow (Jonathan Pryce)
Another Ian McShane appearance on audio commentary for:
Episode 607, “The Broken Man”: Producer/Writer Bryan Cogman, Ian McShane (Septon Ray), and Natalie Dormer (Margaery Tyrell)