I remember there being a post about this a while ago... or maybe i came across it myself. As long as there is inventory i don't really care about the change especially if it is tied to say the move to DDR6 or something etc.
However I'm noticing it in this article as well as what I originally remember seeing "yeah it's thinner" ... but they are only putting modules on one side... they are also ignoring the fact in these articles that memory size keeps increasing and 128GB could be done on 2 SO-DIMM chips with high capacities.
Also the number of people who need 128GB in laptop format is a super boutique section of the market most of these new CAMM modules will either be mostly empty (if there is a minimum size) or we will have sizing like with NVMe where everything will have different lengths and most laptop will likely only support the shorter modules to save space to not be able to take full advantage of the new spec anyways. I don't even recall the last laptop i saw with 4 SO-DIMM slots so the size comparison is even more misleading. They are simply swapping vertical space for horizontal space.