From the Ops group :
A US Senate Panel is considering a broad aviation safety package today, Oct 21, that addresses concerns raised by the collision over the Potomac River back in Jan 2025. This includes a potential mandate for all aircraft already required to have ADS-B Out to also be equipped with ADS-B In by 2031. It also aims to end most military ADS-B exemptions. If the process runs smoothly, this may become law in a matter of months.
The key words are " potential mandate " and " by 2031 , so as we say in French :this is more to "amuse the gallery "( i.e. please the onlookers , appearing to do something ) than to address a safety issue .