I don't own a lot of modern Omegas, but the one I own that gets the most wrist time is undoubtedly my 1957 Trilogy Railmaster, which uses an 8806 movement. So, a while ago I was browsing Instagram and saw that Omega came out with a promotional shot featuring an 8800 movement being assembled in the manufacture. This caught my eye, because it's essentially the base caliber of the 8806. I thought this looked really familiar, and I realized that the jewel placement for the gear train seems to be roughly same as on the 2500/1120/1109 calibers. As it turns out, it seems that the pivot placement of the automatic module also matches. (it seems like some of the areas where there used to be only steel pivots have been replaced with pivoted wheels and ruby bearings). And the more you look, the more similarities there seem to be. Anyways, as I considered the 8800 series of movements to be of a completely novel design, like the 8500/8900 series, I thought was pretty interesting. That said, I suppose it makes sense that Omega used similar architecture to 2500 in the movement designed to replace it. For reference, I pulled the pictures of the 2500 movement from this cool comparison of Omega's 1120, 2500, and 8900 movements. The picture of the full 8800 is from this review of the Seamaster 300m.