This set was mentioned in a press release during Toy Fair back in February. Here's the product information from that release:
TRANSFORMERS: AGE OF EXTINCTION CONSTRUCT-BOTS DINOFIRE GRIMLOCK
(Ages: 7 & up /Approx. Retail Price: $39.99/Available: August 2014)
Construct, change and customize the ultimate DINOBOT warrior with this huge, 10-inch tall electronic version of the breakout character from the new film TRANSFORMERS: AGE OF EXTINCTION! Kids can build GRIMLOCK and convert him from robot to dino-mode and back without taking him apart. Plus, GRIMLOCK unleashes his fire breath in dino-mode with electronic light-up jaws and 3 rapid fire projectiles! Armor up for battle with two additional rapid-fire cannons and an epic battle sword. All of the parts for TRANSFORMERS CONSTRUCT-BOTS DINOFIRE GRIMLOCK can be interchanged with parts from any other TRANSFORMERS CONSTRUCT-BOTS action figure, so kids can create the ultimate DINOBOT action figure! Also comes with a DINOBOT RIDERS-scale OPTIMUS PRIME figure that can ride GRIMLOCK in dino-mode, and which also features customizable parts that work across all TRANSFORMERS CONSTRUCT-BOTS sets!
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