You mean when Jesus returns? It would be about time, don't you think, since they were His source people the first time? But they don't now. The diaspora of the House of Judah was not, in a sense, an atonement; it was in atonement for their turning from God, same as with the House of Israel. God Himself spanked both Houses, one of which we know as the Jews. Maybe "chastisement" would have been a better word.
Israel has been "dead" for 2 thousand years, and have arisen again, and will soon become officially resurrected through their spontaneous faith in the Messiah.
It's Judah mainly that needs to accept the Messiah. Israel, if I read the numbers right, makes up the balance of the Christians. Apparantly they were more willing to listen than than the Jews.