If you're champing at the bit to separate your work life and personal life into two distinct, impenetrable entities, RIM's got your back: it turns out that the Balance product announced a few days ago will be available in just a couple months' time. In a recent chat with Retuers, the company's senior VP of business and platform marketing revealed that Balance is already in testing with carriers ahead of a wide-scale launch -- and furthermore, it'll be available on the upcoming PlayBook as well. As a refresher, Balance seeks to let you do all your personal stuff on your BlackBerry whil