Rereleasing FFG Talisman as a new edition seems ill-advised at best. The only thing it brings to the table is keeping the game in print, which is good in the sense that it's the least bad option, somewhere between keeping Talisman with FFG or letting it disappear completely. This dampers my enthusiasm for new GW boardgames a bit, because rereleasing 4th edition just seems so lazy.
I'm still holding out hope that they've got something new up their sleeve, but not much hope.
I noticed the Talisman app/game was everything copyright GW also. Thought that was weird. I don't think that's what it stated that a year-ish ago.