The Greek New Testament, Fifth Edition is designed for translators and students. Like NA28, this is the leading edition of the original text of the New Testament. It contains the same Greek text as NA28, differing only in some details of punctuation and paragraphing. The critical apparatus includes exegetically significant variants (fewer than NA28) but adds extensive manuscript evidence (more than NA28) for each variant, thereby offering in-depth instruction for students on how variants and the evidence for them work together.
This is only the apparatus. For both text and apparatus, check out the Greek New Testament, Fifth Edition (UBS5) with Critical Apparatus