I pulled up Opening Prices for 2025 Treasure (Inaugural Year). Found what a Gold Castaway booking was for 2 adults. It was about $700 cheaper than same category, same week, in 2026.
Though poor form to only look at one item for comparison, but combined with known history of prices increasing after X number of cabins are sold at Price A, I think it is safe to say that prices may not have dropped, across the board.
Not saying you are wrong, though. And any date could be lower. Dynamic pricing comparisons are a challenge.
My sister’s March 2025 Treasure cruise is now offered at 50% higher pricing than her booking at Opening Day (and she may have been Gold; possibly Platinum. Definitely not Pearl with earliest booking window).