X-Men: Reload was the name given by Marvel Comics to their May 2004 revamp of the X-Men titles with new looks for the characters and fresh plot points. The revamp was prompted by Grant Morrison's departure from New X-Men.
As a result of the revamp, Chris Claremont moved from writing X-Treme X-Men to writing Uncanny X-Men, with Alan Davis doing the art. Chuck Austen moved from writing Uncanny X-Men to New X-Men, which returned to its old name of simply X-Men, with Salvador Larroca, who had been working with him on Uncanny X-Men doing the art. Finally, Joss Whedon entered as the writer of the new title Astonishing X-Men, with John Cassaday as artist. X-Treme X-Men was cancelled. Also, the X-Men returned to more traditional (if not slightly revised) costumes, as opposed to the black leather uniforms of the X-Men films.
In addition to this reshuffle of the main titles, many of the secondary X-Men books were given new writers as well.