Hamilton's Highway 6 widening study is progressing. A public information meeting was held in November which indicates that the Province appears to intend to build interchanges along the corridor and upgrade it to a 100km/h freeway, and not simply provide a twinned roadway with signalized intersections. The province announced construction funding for this last year, so it should move to construction in relative short order.
https://hwy6southwideninghamilton.ca/consultation/
Book Road - I suspect we will see a traditional Parclo interchange here (Alternative 1A)
Airport Road - Alternative 1 is my favourite for this one:
Some interesting options for the intersection with Upper James.. I think I would go with Option 1B (roundabout) for now, and hold of on the full reconfiguration of the intersection until the extension to Caledonia is built. I could see MTO going with 3B to reduce duplication costs for the Caledonia extension, but I really hope they don't go with 4 with the silly loop.