Does anybody understand New Creation Millennialism?

I'm reading Thomas Schreiner's new commentary on Revelation (BECNT), and he supports this theory. He makes eleven points, which he says explain and give evidence to his view, but they are extremely confusing and ambiguous when it comes to the temporal nature of this view. Here are some chronological points he makes to give context: > The millennium is the first age of the new creation. (p. 677) > The reign and rule of believers as priests and kings, though it is exercised to some extent during this life in an already-but-not-yet fashion, reaches its zenith at the second coming of Christ. Believers are vindicated in the judgment and rule with Christ during the millennium, which is the first age of the new creation ... The ultimate vindication doesn't take place during the present age but commences in the new age that is inaugurated by the millennium. (p. 679) From what I observe, it basically sounds like premillennialism but with a bit of already-but-not-yet theology sprinkled on top. Is this correct? My main goal is to understand, relative to this view, when the events of Revelation 20 happen with regard to the second coming. Reference: Thomas Schreiner, *Revelation*, Baker Exegetical Commentary on the New Testament (Baker Academic, 2023).