They've mentioned that this one will be targeted at Fans, with the Cyberverse series the one for kids.
Seeing that some of the Machinima writers are working on this has me worried.
Seeing that some of the TF Prime guys are working on this also has me worried (though this may please some).
I will remain cautiously optimistic as to what this series will be. I'm hoping that it's got a great narrative utilising some of the lesser characters from G1 and just using the Siege name for cross promotion.
That said, since the Siege name is in there, I'm hoping to see Flywheels take centre stage... man that would be cool.