Has God created anything since he rested on the 7th day? Genesis 2 indicates that on the 7th day after creation God rested.


  Genesis 2:1-3 NIV
  
  1 Thus the heavens and the earth were completed in all their vast
  array.
  
  2 By the seventh day God had finished the work he had been doing; so
  on the seventh day he rested from all his work. 3 Then God blessed the
  seventh day and made it holy, because on it he rested from all the
  work of creating that he had done.


Is there any indication that he has created anything since then?  Will he create again?
Yes, He will create a New Heaven and a New Earth. He will recreate everything!

Revelation 21:1-5 emphasis mine
Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and there was no longer any sea. I saw the Holy City, the new Jerusalem, coming down out of heaven from God, prepared as a bride beautifully dressed for her husband. And I heard a loud voice from the throne saying, “Now the dwelling of God is with men, and he will live with them. They will be his people, and God himself will be with them and be their God. He will wipe every tear from their eyes. There will be no more death or mourning or crying or pain, for the old order of things has passed away.”
He who was seated on the throne said, “I am making everything new!” Then he said, “Write this down, for these words are trustworthy and true.”