Beginning October 18, City of Heroes will have special Halloween content. I've already seen this stuff on the test server, and it's pretty cool. It's almost the same as the original Halloween event two years ago.
First of all, there's trick-or-treating. What you do is you go to a zone appropriate to your level (Atlas Park or Galaxy city if you're under 6, Perez Park if you're 7-15, Talos Island for 20-30, etc.) and go around randomly clicking on doors. Sometimes you get a treat, which will probably be an inspiration but could also be salvage, a temp power or an enhancement. Just as often, you'll get a trick. Monsters come out the door and attack you.
The trick-or-treating comes with it a return of all the Halloween badges from two years ago. I've already seen them and they're exactly the same badges! On the other hand, we can't just farm the same door all day until we have all the badges this time. This time, you get nothing until you click on a different door, but you can go back and forth between two doors.
Besides the trick-or-treating, also expect a return of Jack-In-Irons and Eochai to the city streets. There's a Halloween badge for helping to defeat each. These are once again the original Halloween versions of the badge, separate from the badges for defeating them in Croatoa.
Finally, this Halloween has something new - a 5th costume slot! Yes, Halloween is what the 5th costume slot is for. There are four special kinds of salvage you can only get from trick-or-treating, all of them Halloween costume pieces - a Hamidon costume, Back Alley Brawler gloves, a Statesman mask and a Lord Recluse helmet. Take these to Croatoa and look for someone reading a giant scroll just barely SE of the train station to unlock your 5th costume slot.
