This isn't happening in a vacuum though. PS4 is leading in overall sales, Pro has been on sale for a year already, and PS5 is presumably not far over the horizon. People tend not to just upgrade for a short period of time - they want something that'll last a while for the price. So if they've already bought a hey aren't going to just jump on a 1X. And people looking at a pro/1X this holiday that already has a PS4 will at least partly be influenced by being able to continue to access their existing library.
I would expect 1X to outsell Pro this holiday - launch plus pent up demand. But Sony may be able to adjust pricing on pro if they feel the need, and I'm sure they're ready with hints of next gen when they need it - perhaps this time next year?
The ram is a huge benefit on 1X and I wonder what that means for next gen. If we have 12GB now for games that are still held back by the anemic jaguar CPU, and are running at sub 4K, will 16GB be enough next gen with higher polygon counts, higher resolutions, richer worlds?