My understanding is that DHB is trying to mix it up a bit. DHB will be doing 2 week Clan , 2 week IS, 1 month Steiner contracts. For those that want to just stay Steiner, they started DHBx. DHBx is going to stay Steiner loyalist. I forget who in DHB that you need to contact to get an invite to DHBx though, speak to Jeppo or Maelstrom the next time they are on TS and they should be able to fill you in.
Hope this helps, I am a bit out of date with my info so some of the above might be a bit off.