RedSpot Games announced that the release of Sturmwind for the Sega Dreamcast would be delayed due to production complications during the GD-ROM manufacturing process. The announcement came several months after the originally projected release window and pushed the European Limited Edition into the latter half of 2012.
The specific nature of the complication was not publicly disclosed at the time, though subsequent community discussion suggested issues with the small-batch optical media manufacturing process used for GD-ROM production outside of Sega’s official production chain.
Sturmwind eventually shipped in late 2012 in Europe. See the full Sturmwind page for the complete release history.