Noticed this at the local bookstore- it's a special edition magazine about the 2015 JAM convention, from the publishers of RM Models. Lots of pics of layouts- a few very good modular layouts and dioramas in HO and N that are very prototypical, not just the roundy-roundies with lots of viaducts and minimal scenery.
https://www.neko.co.jp/?p=104205