Effective December 1, 2015, the Federal Rules of Civil Procedure were amended. Most commentators have suggested that these amendments contain the most significant alterations to the discovery rules in more than two decades. The new rules will “govern in all proceedings in civil cases hereafter commenced and, insofar as practical, all proceedings then pending.” With the stated goal of moving cases along more quickly and making discovery, particularly electronic discovery, more effective, eleven of the rules have been modified. While some of the changes sought to clarify or simplify the rules, other changes were promulgated to address day-to-day discovery issues which most agree tend to make civil litigation extremely expensive. This article will attempt to highlight five of what this author considers to be the most significant changes in those discovery rules. However, every federal practitioner should become acquainted with each new and/or modified rule.