Not OP, but I'm applying to some graduate programs this year that lead to a Ph.D. in CS, and some institutes have a hard requirement of a Masters degree for getting into their Ph.D. programs, while some (like most top US universities, including GATech) allow you to enroll with a Bachelor's Degree, provided you'll do the required coursework before the dissertation phase. It's really cool that one can earn a Master's Degree while working full-time, before applying to a Ph.D. program :)