You could always grab one and then sell it if/when the pro is ever released. It’ll be interesting to see if products get launched any faster after announcing now that the EA Hardware program is gone, but in the past it would take a while for things to go GA. Better is the hardware that exists and can be bought today than the hardware that’s been announced with no known release date.
You should have a playlist already in your library called “Recently Added” and can have Siri or a shortcut play said playlist. I’m not sure how far back that playlist goes compared to what you’re wanting, so if you want to customize it more, you could setup a smart playlist to add all new songs to.