Yes to all that as far as rumors, however, IHC group formerly AHM; is looking to regroup in the model railroad products market and its all been tied up in the legal fine print that has kept them from completing the Athearn purchase. They also were looking at purchasing rights to the Rivarossi American products licensing. ANY OF THAT COULD BE POSITIVE.
Back in the 70s, AHM made some pretty detailed cars for a low price and established the modest level standard. The drive mechanisms they employed were lacking but I have 30 year old AHM engines that still run, just are noisy.
At the end of this, I would expect IHC to manage both brands in the US with Horizon & Hornby being licensing owners on paper.