A number of unannounced devices currently being developed by Research In Motion have been revealed by the alpha software included on the developer preview phone the vendor distributed last week. BlackBerry watcher N4BB discovered a number of code-names referencing unannounced BlackBerry devices in RIM’s BlackBerry 10 alpha software, several of which are expected to run the Waterloo, Ontario-based vendor’s next-generation BlackBerry 10 operating system when they launch in the future. Among the devices referenced are the Colt, RIM’s developer phone that will not be made available to the public, and the London, which is expected to launch in October as the first BlackBerry 10 phone. Other devices referenced in RIM’s BlackBerry 10 alpha code are the Blackforest, thought to be a 10-inch PlayBook tablet, as well as the Nevada, Naples and Nashville, all thought to be upcoming BlackBerry 10 smartphones.