The Jewish people are in their homeland. And yes they are still returning because the Lord has said “He will send out the angels and gather His elect from the four winds, from the ends of the earth to the ends of heaven” (Mark 13:27). For when the time was right He brought His people home. When the time came, when their return was necessary for the fulfillment of Scripture, He brought them home. So there will be a time when the Third Temple will be rebuilt.