I've been taught as a J.W. that the "New Heavens" is made up of 144,000 annointed christians and the "New Earth" are those that will inhabit the Earth in a paradise
Ephesians 4:4-6
English Standard Version (ESV)
4 There is one body and one Spirit—just as you were called to the one hope that belongs to your call— 5 one Lord, one faith, one baptism, 6 one God and Father of all, who is over all and through all and in all.
John 10:16
English Standard Version (ESV)
16 And I have other sheep that are not of this fold. I must bring them also, and they will listen to my voice. So there will be one flock, one shepherd.
John 17:11
English Standard Version (ESV)
11 And I am no longer in the world, but they are in the world, and I am coming to you. Holy Father, keep them in your name, which you have given me, that they may be one, even as we are one.
Blessings in Christ,
Stephen