This Research Topic is part of the Insights in Frontiers in Cardiovascular Medicine series. Following the success of the inaugural series, Frontiers has organized a series of Research Topics to highlight the latest advancements in research across the field of cardiovascular medicine, with articles from the members of our accomplished Editorial Boards. This editorial initiative of particular relevance, led by Professor Matteo Anselmino, Specialty Chief Editor of the Cardiac Rhythmology section, together with Dr. Hung-Fat Tse, is focused on new insights, novel developments, current challenges, latest discoveries, recent advances, and future perspectives in the field of cardiac rhythmology. The Research Topic solicits brief, forward-looking contributions from the editorial board members that describe the state of the art, outlining recent developments and major accomplishments that have been achieved and that need to occur to move the field forward. Authors are encouraged to identify the greatest challenges in the sub-disciplines, and how to address those challenges.