Bushiroad has recently issued a statement on their official blog that the negotiations with Crunchyroll over the second season of Cardfight!! Vanguard, Asia Circuit Hen, are at an end. The producers of the anime are currently looking into alternative options to releasing season 2 to the English-speaking world; with the recent addition of Cardfight!! Vanguard's English dub to their YouTube page, digital distribution via streaming websites appears to remain the favored method. Due to its advertisement in web banners, it is possible that the dub is being used as a testbed for distribution model based in YouTube.
In a reply on the official Cardfight!! Vanguard facebook page, Bushiroad suggested the possibility of a surprise announcement concerning VGE-BT03 and VGE-BT04, "Demonic Lord Invasion," and "Eclipse of Illusionary Shadows." When asked about an English release of these sets, Bushiroad stated that there may be an announcement with "dark tidings." This has set off speculation that these two sets will see an English release in the near future--the "dark" being taken as a reference to Blaster Dark of BT04, and the Dark Zone nations that BT03 supports.