How do we get Rocket Pass 5?

I am a long-time Rocket League fan. I love the game. However, I do not know how we are supposed to get Rocket Pass 5's Premium Tiers. This is because 10 Keys have been used to unlock Rocket Passes 1-4. However, the Blueprint Update, which will change the key and crate systems, comes with Rocket Pass 5. How do I get this?


Keys have been turned into credits. You get between 100 to 130 credits per key, depending on how many keys you have.

The new Rocket Pass costs 1000 credits.