Look at the timeline
B&M have said before they take 3 years to produce a coaster, from sketch to opening.
The 2016 operating season is less than a year and a half from now, which means if true, CP is well past the selection stage.
If CP said they were in the selection stage for 2016 (which probably isn't possible for a project this big), that would mean they were deliberately trying to be deceptive, which makes me inclined to think this is true:)