We don't have a specific date but here is a suggestion to move forward. If you meet the qualifications you do not need to enter it into your tax return, keep the information and tax documents with your tax file. If you choose you can wait and continue to check for updates.
First IRS Publication 970, Tax Benefits for Education states that nontaxable distributions should not be entered. If the full amount was transferred there is no requirement to enter it.
A QTP to Roth rollover allows for the tax-free transfer of up to $35,000 in unused 529 plan (Qualified Tuition Program) funds into a Roth IRA for the beneficiary, starting in 2024. It requires the 529 account to be open for 15+ years, with no contributions made in the last 5 years.