Paul Smith, the legendary artist best known for his work with the X-Men, has apparently left work on the miniseries The Rocketeer/The Spirit, a four issue crossover storyline for the two characters at IDW. When asked for comment on why Smith has left the mini, IDW editor in chief Chris Ryall simply said that he was "unable to continue".
Moving in to take over the rest of the Mark Waid-written miniseries will be J. Bone, who'll be handling the final two issues of the storyline. Production on this series seems to have been hugely troubled - the second issue was massively delayed, and now Bone has come in to finish off the miniseries.