So called again to ask some questions, and I was told Optik Highspeed's cap was being halved but the Optik Highspeed Turbo cap is only going from 500gb to 400gb? Which is different from what I was told previously as a different rep confirmed when I asked if the caps were being halved.
Going to be interesting to see what the website update says as every time I've talked to a support rep they conclude by pointing out the "the website will be updated on Feb 1 with the new caps".