We all know X-Men film continuity is irrevocably broken in a myriad of ways but now Magneto has 8 years to age from left to right. The Clinton years took a fucking toll on Magneto.
If we assume X-Men: The Last Stand (2006) takes place in the year of its release, then Beast goes from Nicholas Hoult (b. 1989) to Kelsey Grammer (b. 1955) in 14 years.