yes it looks comparable to the older minis before 18S. 18S was smaller and shorter than anything before I believe.
I’ve only seen the Navy in real life so far.
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this is the Navy with GHW. I had the chance to try it on and it is slightly longer than 18S. comparing to my 18S which is difficult to crossbody. it also seems taller/higher. I didn’t have my 18S one with me to compare unfortunately.
but just from looking at my photo now you can tell the top flap seems longer than the 18S one. I know in the Spring/Summer thread a few others have also mentioned that 18S square seemed to have a smaller capacity than before and I know someone also posted comparison pics with older squares. I think it’s either shorter or the length of the flap portion was lesser, making it hard to pull down and close and you couldn’t overstuff it. if not many have said that a square can actually fit as much as a rectangle as it’s taller in height still. (Except 18S

)
though the 18B caviar leather is not as shiny as the 18S one, it does have the shine to it, and finer grain pebbles. it’s also pretty sturdy and thick, puffy. it still has a very classic look.
to me it’s still gorgeous, gorgeous enough for me to consider rehoming my 18S for a 18B one instead hmmm...