The latest news from the PTR for patch 5.1 is that Steady Shot, Cobra Shot, and Barrage will be able to be cast while moving. This is a huge change, and one that is much desired for hunter PvP. There’s no indication yet on what’s happening with Aspect of the Fox, but we have to assume it will be either reworked or removed.
Personally, I suspect we’re only seeing the attractive tip of the iceberg here, and we’re not actually getting the ability to just do full damage while moving. Blizzard has been very clear that your DPS while moving should be substantially lower than standstill DPS. Moving is supposed to hurt your DPS, and while hunters are better at dpsing on the move than most other classes, I highly doubt Blizzard is just going to let us do top damage with no downside.
Here’s what Ghostcrawler said in the recent past:
Movement should be terrible for a ranged spec. Full stop. All of the various mechanics we put in from Spiritwalker’s Grace to Aspect of the Fox are to make moving less terrible, but it should still be pretty terrible.
My point here is I don’t want the hunter world to get all excited based on this small bit of datamining, and then be pissed off when they don’t get everything for nothing. We gotta wait and see what the price of this casting on the move is.
The other notable change datamined thus far is that Lynx Rush will no longer do direct damage on each attack, but will instead apply a 10-second bleed with each attack. The bleed effect is stackable, so the ability is still good on just one target, but the damage contribution is less bursty and more spread out.