Fortyodd is joining NPAS later (2013) than the others as his region will be the last (ish) to join. The final tranche joins after the para olympics is over (2014).
The NWAOG region have been operating as a test region since last July. The other 'shadow' region is the CRASU which started in June 2011. And a jolly good job they are doing to!
However the original cost savings projected to be 22% (Option 2) have been whittled down to between 11% and 18% (depending on who you talk to) inside these shadow regions.