A midnight launch of the toyline in Singapore at ToysRUs (May 16), shows off some of the special stuff on offer, and mentions some of the activities planned.

They will be selling the (as yet unknown) TRU exclusive Platinum 2-pack of Optimus & Grimlock, with a limited number of bonus goodie bags if you buy it at the promotion, that includes movie tickets, poster and a pair of metallic figurines (Gen1 & Movie Optimus)

Plus, the person with a TRU Star Card who spends the most that night will win a golden Leader Class Optimus toy (which is likely to go to a toy dealer, who would have the resources to "outbid" private collectors just to secure a toy that could easily fetch a couple thousand dollars on ebay).

be the first to own the figures from the TRANSFORMERS: AGE OF EXTINCTION movie. Fans can also revel in fun-filled activities such as putting their skills to the test in a race against fellow fans to convert TRANSFORMERS figurines; and have their photos taken with their favourite Transformers characters. What’s more, the top spender of the night will win a Gold-Chrome Transformers 4 Optimus Prime Leader (with display case), limited to Toys’R’Us Star Card members only.

The Transformers 4 Platinum Edition Optimus Prime and Grimlock, available only at Toys’R’Us, will be launched at this event. Fans who purchase this item during the event will stand a chance to receive a pair of TRANSFORMERS: AGE OF EXTINCTION movie tickets, a Transformers paper bag and movie poster, along with Miniature 2-inch Optimus Prime Then & Now metal figures.
The link also mentions an App for people to roar into their phone to contribute decibels of noise to the target of a million, and if your recorded decibels is high enough, you get a freebie at the TRU event. (the store is the one that was next to the Hotel I was staying at in 2012).

(since the three major department stores here have broken the street date, I imagine that if anything was being planned here by TRU, it's not going to mean as much if it still goes ahead)