A new 3rd party company called D.I. Studios has shown some very nice and polished prototypes for two 'Hearts of Steel' toys.
http://www.seibertron.com/transforme...cticons/23587/
They include a Hearts of Steel Insecticon train and of course Starscream!
As we know, the other 3rd party, Mastermind Creations have previously 'specialized' on such designs but DI Studios seems very determined to take that crown with very awesome designs!
More pics here:
http://www.seibertron.com/energonpub...ic.php?t=83249
Edit: Rumor has it that these designs are indeed from the same people that were at Mastermind Creations. The designer seems to have split of from them to form their own company.