I'll be moving all of my primary sites (the comics, art gallery) to a new server the morning of Monday, October 6 (probably around 9AM central time or sooner). Everything has been tested already-- just need to make the final DNS switch to point the domain names to the new server. All of my secondary sites have already been moved over.
I'll be shutting down the chat and forums right before the move so that I can copy everything over without risk of people posting things in the meantime and data getting lost.
Once I flip the switch to get the domain names pointed to the new server, it usually takes about 15 minutes or so to propagate, but for some people it can take up to 24 hours.
CLARIFICATION: The ideal situation is that no one notices anything and this post is meaningless. (It's just good practice to announce something like this, so you know what happened in case I accidently break all 30 of my websites at once or something.)