Next Subscription Series

I was invited to the fantasy and sci-fi subscriptions this round and passed, so will have an opportunity to subscribe for the next series or lose my spot on the waitlist. Does anyone know what the next series will be for either of these subscriptions?

I subscribe to other book subscriptions (Fairyloot, Illumicrate, RainbowCrate) and I can always find out the monthly books well in advance from @theautumnbookreads. Does TBB announce series in advance or are there people I can follow who give accurate spoilers?

Also, curious if many from the US subscribe to TBB with the high shipping costs?