The 28th edition of the Novum Testamentum Graece (the Nestle-Aland Greek New Testament) is now available. It was unveiled in November at the annual meeting of the Society of Biblical Literature.
It has been nineteen years since the last revision, and a great deal of text critical work has happened in the intervening years. The Institut für neutestamentliche Textforschung (INTF) in Münster deserves significant praise for this new edition since it is they who have provided the scholarship and expertise the bring about this publication by the Deutshe Bibelgesellschaft.
Among the many advantages of this new edition over the previous one are the online tools for reading it.
Dan Wallace has provided a nice evaluation of the new edition in which he discusses some of the more significant textual differences between the 27th and 28th editions and critiques the diglot version in which the Greek text is accompanied by the English Standard Version. You can read his evaluation on his blog. His evaluate is the bottom half of the blog post you will see when you click on the link.
Another multilingual edition is available that includes the New Revised Standard Bible and the Revised English Bible. Yes: that’s two English translations alongside the Greek text. Right now Barnes & Noble is offering preorders of this triple-text edition at $49.26 rather than the $72.99 price that is being advertised for after publication. [They say this is 32% off, but their math is questionable. $49.26 is actually 32.51% less than $72.99. That rounds to 33%, not 32%, but I'll be glad to have the extra change!]