'Antony' tells us he got to chat with X-Men: The Last Stand visual effects supervisor John Bruno about both Magneto and Fantastic Four 2:
I didn't know if you were interested but I can confirm that Ian McKellen will be playing Magneto in the prequel. I was told this by John Bruno at a screening of X3. The company who worked on X3 to deage them is also going to be doing the Mags prequel. According to John, Ian is really excited.
I was lucky enough to spend nearly 2 hrs alone with him asking all sorts of stuff... by the way Silver Surfer is also in FF2.
Stay tuned for more on these projects as the news comes in.