Eph 3:21 (NASB) to Him be the glory in the church and in Christ Jesus to all generations
[fn] forever and ever. Amen.
fn - Literally: of the age of the ages
Paul states that worship will occur throughout the generations "forever" therefore to state there is an end of generations posited by a supposed end of the church age and an end of the world is contrary to what Paul stated and other scriptures.
"age of the ages" is the Greek way of saying "endless" - that's why modern translations translate the phrase
aionas ton aionon (αἰῶνας τῶν αἰώνων) as "forever and ever".
Yes there was a new creation, the deconstruction of the old creation was in the 1st century AD, the old creation was the "world" of the Israelites that came to an end in the war of 66-70 AD along with the passing of the old covenant - the new creation is the covenant of Christ:
Heb 8:13 (Young's Literal) in the saying 'new,' He hath made the first old, and what doth become obsolete and is old is nigh disappearing.