Originally Posted by
DarkLink
Current rumors indicate that a new codex/codices are most definitely on the way.
Half full. All current indication is that there will be a new codex in a year or two, and as Melissia pointed out, removing old stuff early is standard GW procedure.
In all probability, the DH and WH codices are fairly poor sellers, so GW probably currently has enough backstock to last the year or so until the new codices come out, so they can stop printing earlier than they would with another army.