Maybe, but certainly they will do it after AG3's release. And I heard that juice tin and addisonr started the development of a raze 2 probably multiplayer.
I am addicted to that game. If you need any tips, just ask me. =)
Sorry, that was off topic. You might want to ask Louissi. He might have a email address called louissi@armorgames.com, like cormyn because cormyn's is cormyn@armorgames.com.
He told me he wasn't going to make any more changes because it was taking up too much of his time for other projects. But who knows, maybe if enough people ask him he might work on it.
Anyway, a multiplayer Armor Mayhem would be nice. =)
Just for future reference, there's a flash gaming section where you can make threads like this or you could post on the game developer's profile. Also, if you didn't know already, Armorgames doesn't make the games on the site, (some of the site developers/ admins do, but not the site as a whole) users do. Unless they advertise, they're pretty much making games for free and it takes a lot of time to add things to their games, let alone a whole multiplayer mode, so it's probably better that you ask for a multiplayer mode in future games.