Has God changed his plans – again?

Paul, Peter, John and Jesus himself predicted that He would return soon, ushering in the new, eternal kingdom of God. But it hasn’t yet happened. If God changed His mind about destroying all living creatures (Flood), the Israelites (Golden Calf), Nineveh, etc. and didn’t deliver Israel from defeat and exile although He had promised He would, can it be that He has also changed His plans about Jesus’ return in glory?