Definition (未來)
This phrase is used to suggest that more surprising or exciting events are likely to occur in the future.
好戲還在後頭
If you thought that performance was amazing, just wait. You ain't seen nothing yet!
如果你覺得剛才的表演很精彩，那就等著吧。你還沒看到更精彩的！
Let me assure you, there is much more to come. You ain't seen nothing yet!
讓我向你保證，還有很多精彩的事情即將到來。你還沒看到更精彩的！
That was just the beginning; you ain't seen nothing yet.
那只是開始；你還沒看到更精彩的。