That’s right. Scott Lobdell is writing a follow up to the movie as a comic book. io9 had an interview with Scott about the project. Here’s a snippet:
Q: Does the comic take place right after the movie ended?
The comic book opens with the final scene from the movie when they are showing the title sequence for the new Galaxy Quest series. The idea is that the actors are watching a screening for the new show, hoping it will get picked up and they can all have their old jobs back. But during this process a few terrible things start to happen in space and the government asks the crew to pilot their ship out to space and check it out. As we know from the movie the ship was made based on the actors movements and actions so no one else can work it. The government has no choice but to send the cast up in space.