This chapter summarizes new approaches to the study of traditional dialects, in particular in Britain and the United States, and discusses how new methods, new results, and new topics of investigation may inform and enrich the study of World Englishes, too. Of particular importance may be the acknowledgement of widespread variability in the ‘homeland’ that is increasingly also historically attested and sociolinguistically described, the study of morphosyntactic variation as an area of language that seems to remain quite stable under settlement conditions, and the comparative study of present-day variability that indicates the breadth (and limits) of variability. In return, results from the comparative study of World Englishes also have the potential to enrich modern dialectology and sociolinguistics.