Sub-Mariner

Jonathan Mostow's film adaption of 'Sub-Mariner' still seems to be in development after all these years with David Boreanaz rumored to play the title character Namor.

Nothing on the films seems to have been changed since Mostow's return to the script in 2007 but apparently is due for 2010 so we can only keep our eyes peeled and see how this pans out.
It would be interesting to see an aquatic superhero considering we've reached the heights of flying, swinging and thumping.

X-Men Origins: Magneto

Could Magneto be next in line for the X-Men start over series?
It's clearly in production but whether another character will fill the gap between this and Wolverine is yet to be announced.
The film is being directed and co-written by David S. Goyer who's also helping to pen the script for 'The Flash'.
So it's comic book films for him for a while!

I think Magneto's origin story could potentially be a lot better than that of Wolverines due to the amount of Wolverines story tht was already covered in the original X-Men films. But i'm unsure what characters they'd bring into it and whether at any point the would use Ian McKellen or whether he'll be working on the Hobbit by this time!?