Michael Glerup, Gregory of Nyssa: Sermons on the Beatitudes (Classics in Spiritual Formation) (InterVarsity Press, 2012), 160pp.
This does not sound exactly like a translation per se, but a version that seems suited for use in a parish study or a book club or something similar. The publisher tells us:
As part of the Classics in Spiritual Formation, the sermons of Gregory of Nyssa offer a contemporary rendering of ancient spiritual wisdom for today's readers. Begin with the introduction, which provides the context and background, and then dive into the text, translated and paraphrased Michael Glerup from the original languages. You'll also find helpful callouts that show how the work relates to your personal spiritual formation and clarify unfamiliar ideas. Don't miss this unique opportunity to interact with the work of some of Christianity's great spiritual formation teachers and experience true spiritual transformation.