I just got an Extended Set Box (with gold), which should have consisted of 10 packs. Instead I got 1 or 2 regular packs, and then started getting other packs - they were full of avatars, some low tear exotics, and generally had fewer runes. At some points there was some flavor text instead of runes. I got a total of 4 packs, instead of 10, and they were full of things other than runes. Is this a bug, or have I missed an announcement that these are the new "boxes"? My username is PiPPoInZ.
