Roadbuster has been desired since G1, especially a complete one due to some of his very small accessories being an absolute pain to keep or obtain, so this is big news for a lot of people. He's a nice G1 update figure that's been in high demand and now, our wait is just about over.
Sky-Byte is a fan favorite due to his characterization in 2001's Transformers Robots In Disguise television show, based off of Takara's Car Robots that had aired in 2000. Sky-Byte was originally a redeco of Transmetal 2 Cybershark, but this time he's getting his own brand new mold!
Gears is another fan favorite, but this time, this little guy is scaled to work with Titan Class Metroplex, and is a redeco of the previously released Swerve. (You can see the galleries of Metroplex and Swerve by clicking on their names.)
Acid Storm is a redeco of Starscream, based on a random background character used in one episode of the original Generation 1 TV show. (You can see the Starscream gallery here.)
We've mirrored the images below:
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Also I believe that Hasbro has put a lot of money in other toy brands including Transformers (specifically the Prime and Generations line). When they realize that they have little money, Hasbro would make cheap, simplified toys when children claim that "the Transformers toys are too hard." 
So once Hasbro is comfortable with the money that they made, they'll make as many toys for the new Transformers cartoon (coming out in 2015) as they can. Simplified or not. 
