I think for announcement they will wait till their Fiscal year ends. So the announcement can be anything from April onwards, with end target by september if they want to launch it in the fall.
My sales comparison threads:
Ultimate Showdowns: JP 2023 / JP 2024 / 2024 / 2023 / 2022 / 2021
Lifetime Showdown / Historical Showdown / YOY Charts / 140M+ Club Chart / Quantity of Games