Additions from my visit
Piko: on top of everything Pete said, the Piko rep also mentioned that they are discussing close to 180 (!) improvements to the 2nd run of the Whitcomb switcher. They are aware of the feedback on traction tires, and one discussion is to provide non traction tires wheels on the locomotive with a traction tire wheelset out the box. Their biggest concern is that the locomotive pulls very little without the TTs.
Intermountain: Their SD35s in bi centennial scheme is making progress. This was offered for preorder several years back.
Same story on cab forward as I heard last year, they are still evaluating choices for the factory to produce