This is the first English-language source I’ve found for this news. Here’s the relevant bit:

This second patch for the much-troubled Raiden Fighters Remix Collection adds quick-restart functionality, a new optional pixel-smoothing filter, fixes to the button config and various other bug tweaks, as well as support for PS4 arcade controllers on PS5; it’s being promoted as the final major patch, and while the game could certainly use more updates to address issues like input lag, one might at least find these releases to now be adequately playable.