I know they plan on purchasing 8 a/c some will be replacement and others new availability. With TOM planning on upgrading their fleet to the 800's then there will be more airframe available on the market.
Just been looking further into the WW website and unforunatly there have been further cuts on the GLA which will operate only 5 x Weekly along with the BFS going to daily from 2 x Daily
It doesn't look as if there will be any expansion or new aircraft anytime soon