Dark Souls: Prepare to Die's move from Games for Windows to Steam has been delayed from November to December, a post by Bandai Namco on the game's Steam community page has confirmed.

"We are working hard to finalize the process to move your Dark Souls: Prepare to Die saves and achievements to Steam. We need to conduct additional testing and we are now targeting December to begin this process. We'll have more information in the coming weeks. Thank you very much for your patience!" explains the blog.

Once the update goes live players will be able to migrate their game, saves and achievements to Steam.

Games for Windows Live users will be able to redeem their Games for Windows Live Tokens on Steam to get Dark Souls: Prepare to Die Edition at no additional cost. (To find your Games for Windows Live Token, please head to the support webpage:http://support.xbox.com/en-US/billing/prepaid-codes/locate-games-for-windows-live-tokens)

There will be a period by which Games for Windows Live Dark Souls: Prepare to Die Edition users will be able to transfer their Save Data (characters + progress) and Achievements over to their Steam accounts.

Players will still be able to use their Games for Windows Live Tokens to redeem the Steam version of Dark Souls: Prepare to Die Edition at no additional cost even after the migration period ends; but game Save Data and Achievements transfer functions may not be available.

Games for Windows Live Rankings will not be transferred to Steam.

Source: Steam