We are currently working on a TBC Classic version of the optimizer! It won’t be ready right at June 1, but it will be available much sooner after launch than the Classic optimizer was for Classic.
The exact timing also depends a lot on the Shadowlands 9.1 patch – that is a major patch that will take a couple of weeks and we aren’t sure exactly when it will be, so if we don’t finish before that, the TBC Optimizer will likely come out shortly after it.
The TBC Optimizer will be a separate product from the Classic Optimizer. As with Classic, there will be a one-time fee to add TBC on to your account.
We’re leaving the Classic Optimizer as-is for people who choose to stay on Classic Era servers. Please note that the current Classic-only server won’t work for TBC pre-patch characters either, it is truly a classic-only optimizer.
If you just recently purchased the Classic optimizer because you wanted to use it for TBC, you can contact us via email and we’ll give you a refund, then you can get the TBC optimizer when it is available.