I know plenty of people have other complaints but I've been wondering about this for a few days.
This
http://forums.spiralknights.com/en/node/19232
* Spike traps and Rocket Blocks in Blast Network maps will now inflict Stun damage only.
said that's what would happen to them but as far as I know they disappeared completely from the arena types. I know people would probably go like why would you want more things to kill you, but I thought those made it a little interesting. It helped change things up. You could get your blast up to 15 and then get destroyed by a rocket, not a player. I'm not saying put them in all matches, but unless I've seriously been missing something those maps never appeared again (with or without stun)
I havt seen any spike traps so... As of now, I'm taking a guess of no. I did see them on he first day but...