devtrackers.gg
this did happen, when the april update dropped.
everybody who has played since the update drop got all of these rewards (from zero - whatever your trophy count is) when they opened the Trophy Road for the first time.
if you played last season but have not updated or played since before trophy road came out, then you will still receive all of the rewards that you are owed.
please check this article here for more info on how season reset and trophy road works: https://clashroyale.com/blog/news/upcoming-league-season-reset-new-rewards.html