Who else but Boy Genius has received a solid tip about the un-released BlackBerry Slider. Apparently the device (or one of the devices) will be modeled the 9900 or 9930, and will be available in both CDMA and GSM/HSPA radios. Apparently Sprint has been testing this new unreleased Slider and so far it has failed 4 of the 5 tests. According to the tipster, the last time a device failed this many tests was the BlackBerry Pearl Flip. Boy Genius also suggests that Sprint might be heading towards an exclusive launch for the Slider 9930, although we doubt it. The GSM/HSPA version will be the 9900, and will feautre GSM/HSPA 850/1900MHz meaning we may see it on AT&T, Rogers, Bell and TELUS.