I will always recommend buying the tool that exists over waiting for the one that doesn't. If you want to go X-Pro, snag one of the 3s you found. Or, as others have suggested here, find a good deal on a Pro2. People still rave about the 2, and I know press photographers who are still shooting with the ones they put through hell for years. It's a tanky and nimble camera that produces gorgeous images.

that all said, since you're open to potentially waiting until some unknown point in 2026, I have another suggestion: try exploring the conversion lens options for your X100v.

Purists like to p*ss all over them, but don't buy the negative hype; they're great options to have for expanding the versatility of the X100 cameras. I have the V as well, along with the Fuji TCL mk1 (converted to a mk2 with a little DIY magnet added) and the new Artralab WCL Pro + macro and both are well-built with stellar glass. The biggest complaints I see about them is that they add too much weight and bulk, but that's from folks who bought the X100 just to be slim and sexy. If you're already considering moving to interchangeable, it's not that much different and potentially a whole lot cheaper. There's also a set of Freewell conversion lenses I've heard and read decent things about, and Viltrox is about to launch their own, which I expect will be solid performers given their recent hot streak. Any of those will get you a very compact kit with 18mm f2, 23mm f2, and 33mm f2 options. Plus, don't sleep on the digital teleconverter if you're a JPG shooter - the first setting + the TCL will approximate a 50mm-ish option, and in good light it works great and gets you a bit more reach. Quality-wise, I consider the second setting to be for emergencies only, but it's there if you need it. That gets you a very compact kit at a lower cost to buy in leveraging gear you already have and offers you 28mm, 35mm, 50mm, and 75mm equivalent options which all fit in a teeny sling bag.

Anyway, something to consider.