Sci Fi Wire talked to producer Lauren Shuler Donner about the spin-off Magneto movie, here what she said:
“We have a great script. Honestly, we have all been just so focused on getting Wolverine out that we didn’t take the time to sit down and explore ‘What are the movies we’re going to do next within the genre?’ We will do that. We will do that. We all want to. Magneto is a fantastic script, and hopefully we’ll make it. I don’t know.”
X-Men franchise producer Lauren Shuler Donner
She also confirmed that the development of Magneto depends on the success of Wolverine.
I don’t worry much then: Wolverine will rock the box-office and we will get a Magneto movie. They definitely have to film the screenplay drafted by Scriptwriter Sheldon Turner. The synopsis of Magneto that was released earlier was quite promising indeed:
The original X-Men Origins film began with a prologue that showed the character as a child being led to a concentration camp by Nazis and that is the period in which the Magneto film will take place. This setup will allow a future villain to at least flirt with the designation of protagonist since the character will be seen almost exclusively in his formative years. The storyline will heavily involve Professor X, the wheelchair-using X-Men leader. That character was a soldier in the allied force that liberated the concentration camps. The professor meets Magneto after the war and while they bond over the realisation that they are alike in their special powers, their differences soon turn them into enemies.
The sooner they release this Magneto movie the better it is! I know they’re thinking about making a movie titled X-Men First Class, well, please do Magneto first! :)