I also noticed that the area of the Jein's rear hangar bay has some pointy bits on either side of the landing deck that the I.M. silhouette doesn't appear to have. I really want to see more of this thing. It's a nice looking design.
It seems others are comparing the U.S.S. Jein to another work by John Eaves - the U.S.S. Emmett Till, first shown in the 2019 retrospective documentary What We Left Behind as Ezri Dax's command after the events of DS9.
The ibn Majid is clearly based on the Emmett Till, only with two nacelles instead of four. The big giveaway is that both the ibn Majid and the Emmett Till have front-facing shuttlebays in the saucer; the Jein has a deflector there instead. Also: https://www.trekbbs.com/threads/the-apollo-class.314206/
^^^ Which implies that the Jein's secondary hull may be so low-profile and tight to the saucer, there's literally no room to put a forward nav deflector, hence its placement in very front of the ship. Either that, or it's possibly a thru-deck carrier with a front-facing launch bay at the front of the secondary hull. Either way, I definitely want to see other views of this thing now. I am quite intrigued by it.
From the top can we tell? I can’t recall if I’ve ever seen orthos of the Till, but the design looks like they overlap completely.
Dave Blass posted a MSD that only has 2 nacelles. https://twitter.com/DaveBlass/status/1654107067425193984 Also I completely missed this, but he posted a fan made Eleos's plaque at the beginning of the month https://twitter.com/DaveBlass/status/1655187793491140608
So the Eleos was originally built in 2374. At least that date makes sense based on the design of the ship.
And her decommissioning and recommissioning line up with the future anti-time 2395 we saw in "All Good Things..." when Beverly was Captain of the medical starship Pasteur. History put Beverly in sort of a similar job at the same moment.
That MSD just reminds me that the length of warp Nacelles is completely inconsequential to their performance and there is no justifiable reason to have a 200 metre long nacelle compared to a 50 metre one as they all seem to have a differing number of warp coils. The overall design feasibility of warp engines is brought into question when tiny Nacelles like the Intrepids were supposed to be the best in Starfleet at the time and then a couple of years later the Soveriegn shows up with absolutely colossal Nacelles for no identifiable benefit. Nacelle design confuses the hell out of me!
I don't think warp coils inside nacelles are one size fits all. It may actually be dependent on the individual design with some ships needing larger or smaller coils in both size and number. The warp nacelles of the Crossfield-class are almost ridiculously long and skinny and comprise most of the ship's overall length, but the shorter and fatter nacelles of smaller starships are likely comparable as far as output goes, IMO. I think it's just whatever works for an individual design. There's no golden rule as far as nacelle design goes except for they simply have to work well for that particular design it serves. I think that's also true for how many nacelles a specific ship designs needs too.
I kinda think of it as comparing a hopped up, turbocharged, 4 cylinder engine, to a massive V8. You can get incredible speed out of either engine, there's just different ways to do it. I've seen a homebuilt little Honda with an engine displacement somewhere in the 2 liter range, absolutely destroy a quarter million dollar, V12 Farrari. So anything is possible.