Warhammer FRP has always had a very active community that provided a great deal of content (both crunch and fluff). This was particularly welcome during the diaspora when WFRP was in limbo.
The new edition relies on lots of shiny bits: cards, special dice, tokens, etc. which, to me, make it very difficult for anyone other than FFG to create content. Are we limited on creating house rules to aspects that are not "on the cards"? It has always been easy to add new careers, tweak the combat rules, introduce new spells and other crunchy stuff. Will the new configuration limit us in what we can do, or are we going to find ways of compensating (perhaps with FFG's help) by creating our own card-backs, character-sheet templates, etc.?
As an aside: I'm seeing something similar happening in D&D4e: Many people are relying on the (rather excellent) Character Builder whoch means if it's not in there, it doesn't make it into the campaign. There's been a thread over on rpg.net where 3pp publishers are lamenting this fact: it's become an entry-barrier to their products.