Heavy Duty and (Breaker? Probably; he's more established than Dial-Tone) have been cast. (Fortunately, Heavy Duty is not a Wayans Brother, as had been rumored. ^ ^)
http://news.yahoo.com/s/nm/20071220/film_nm/gijoe_dc
Poor Roadblock; guess Marvin F. Hinton's out of the picture out since the kids know Monty better now. At least Roadblock got a 25th Anniversary figure. (Seriously, Hasbro didn't even tie up the Roadblock trademark name until 2002, and by then, Heavy Duty was already pretty well-saturated. Hence such things as Roadblock's identical twin brother, "Double Blast" (He wasn't even the same guy in the file card!!!) and the subsequent, uh, "Heavy" uses of 'Duty. I do like the reference in one of Heavy Duty's filecards to how the team is disappointed with Heavy Duty's cooking in the wake of Roadblock's culinary masterpieces. ^ ^
Edit: It occurs to me that Roadblock would A. Be horribly offensive to audiences if he was played like the cartoon version, and B. If they didn't play him like the cartoon version, he wouldn't be so much Roadblock as...Heavy Duty. So just to be clear, I'm not frothing at the mouth over the use of Heavy Duty. Heck, I like his Sigma Six toy and I had the first Heavy Duty figure when I was a kid, whereas I NEVER had Roadblock. XD