Vocaloid fans probably already have the upcoming Hatsune Miku: Project Diva F game pre-ordered at their favorite retailers but may need to change their plans if they want to snag some exclusive DLC.
Those who pre-order Hatsune Miku: Project Diva F from GameStop get a couple of digital goods. First, there is a custom PS3 theme which comes with 10 Hatsune Miku backgrounds. You also get two snow Miku 2013 outfits in game. Sure, these digital goods might not be a big deal to you, but there are definitely Miku fans out there dying to deck their system out with official themes.
When should you order by? Well, just get a pre-order squared away some time before launch. Project Diva F will land on PS3 on October 27th. The game is also to be sold at a slight discount of $50 as opposed to the more standard $60 new game pricing.