I bought a black Ridley X-Trail Force x1 a few years back and loved it, using it to ride the Nor Cal Grasshopper series (Old Caz, King Ridge Dirt Supreme, and most others), Bike Monkey's Livi's GF Panzer route and Fish Rock, and a bunch of other challenging things straddled what is possible on a road bike and mountain bike.
I had a bad crash and the handlebars put a crack in the top tube, so I looked around for a new frame and decided I liked the X-trail so much, I'd just buy it again, only this time in Blue-green/Orange because I'm so tired of black bikes (I don't know why it is called Blue Green, it looks like just blue to me and the color matches the pictures here well). My Gearhead Kyle helped my get it sorted out and it arrived in a few days. It is so gorgeous, I want to just hang it on the wall!
I'm super excited to build this one myself because I get to do things like shorten the brake and shifter hoses/cables (stock always come long to accommodate a range of fit but I run my stem slammed, so there's been extra). I'm adding a PNW dropper using the front derailleur cable routing to keep it internal, which will increase the weight a bit but make single track descents even better.
The only difference I can see so far is the older frame was a 15-100 front through axle and this new one is 12-100, so I had to get some DT Swiss end caps. If there are other differences, I can't tell, everything else looks the same.
If I had any complaints, it is that it won't fit as wide a tire as has become popular lately with 40mm front and 38mm rear being max. Also, it would be nice if it came with frame protectors where the tires come close to the frame at the chainstays because when the tires get packed up with mud, it wears the frame (on my old bike, I added thick vinyl stickers here, but they need to be watched and replaced on occasion).
UPDATE: She's all done! I never really knew how much better a "road" bike could be with a dropper. Being able to move around, have my legs do more of the shock absorption and stay low is amazing.
Another difference in the frame is the rear brake hose routing, it now comes out of the bottom of the chainstay instead of the top. I ended up replacing the brake hose front and back (bleeding SRAM is so much fun :( ) so I could get the length just so. You might be able to get by with the old if you disconnect/reconnect them but be prepared.