Hatsune Miku is sort of a big deal around here.  In Japan, an even bigger deal.  It comes as no surprise then that an entire festival would be created to celebrate everything about the vocaloid.  To celebrate the second anniversary of the computer voice idol, there's MikuFes '09.  Entrance and a drink will cost you 3939 yen when the show opens on August 31 at Studio Coast.  There will be producers on hand at the event, such as supercell, livetune, doriko, OSTER project, among others.  You can probably bet there will be limited edition merch and just about everything Miku.  For now, you'll just have to watch the official site for more info.