There are several tiers of rewards ranging from bronze, silver, gold, and platinum. Bronze is the lowest tier with platinum the highest. Each tier has its own solo requirements and group requirements. For example, the solo requirements for bronze include 1225 - 1299 rating and 25 wins, while the same solo requirement for gold is 1500+ rating and 100 wins.
When you compete during the season, you’ll earn tokens. These tokens can then be traded in for rewards. Keep in mind that these tokens aren’t specific to any one season. Therefore, you can save your tokens and spend them as you see fit on rewards you want.
The end of season 12 will also see replicas from previous ranked seasons. For example, the Replica Swashbuckler Weapon Set and Cutter Mount will be available to purchase. The team then goes about addressing Season 13,
“Season 13 will begin later this summer! Starting with Season 13, we will reveal the seasonal rewards at the start of the season, so keep your eyes peeled for that announcement.”