Transformers 4 Dinobot Theme for Toys R Us?

A memo from Toys R Us suggests that Hasbro has already worked out one of the ways they will promote their Transformers 4 toy line. No details except the line "Transformers 4- June 2014 Dinobots theme + 2 more movies planned." The use of the plural means there will be more than one Dinobot at least. Which ones remains a mystery.