As I keep The Lamley Group and T-Hunted open in my tabs at all times, I noticed that the artwork for the J batch that will be released in June had been revealed.
That includes this batch's Treasure Hunt, the Enforcer shown above, and the 8 Crate shown below.
Along with those, the batch will also include three more ZAMACs (which, of note, nobody seems to have been able to find any of the 2015 ZAMACs in stores yet, for some strange reason).
The J batch will include the '67 Austin Mini Van, Brazilian Dodge Charger, and the '90 Honda Civic EF (no picture has been released of the Civic).
The article also included the '70 Ford Escort RS1600, which I know you're all anticipating.
There were 7 more images included. Three are models that haven't been released yet in the '15 mainline (Dodge Challenger Concept, '65 Ford Ranchero, and Custom '12 Ford Mustang), and 4 recolors (Lamborghini Urus in white, '70 Chevy Chevelle in red/green/brass, '71 El Camino in purple, and Morris Mini in light blue).
The article only listed those as highlights, so there's probably a bit more that will be introduced, though I can't find them anywhere (when T-Hunted posts the artwork, they're more comprehensive, showing everything, but they have only posted the Enforcer TH so far).