After a plant tour this week it obvious the straight walls are easier to make.. thus less $$. Yes, it provides more space not really sure how much, but a lot more work goes into the curve, i.e exterior walls entry door, slides, interior walls, and so on. I would think that the curved walls will remain popoular despite the changes..
Now, dont get me wrong... the straight walls are beautiful and put together nicely... but, I'm gonna say it may have a little to do with saving a few $$ in building. I noticed the steel storage bins are no longer steel but now a different material. Weight saving issue? Maybe, maybe $$ savings..
Regardless these appear to be nice coaches... we're excited about taking ours home soon.
Slim, RVing 30 plus years
2015 Dynamax DX3 37 RB