The answer is apparently: Yes!
As you can see in the above images, we're most definitely getting an updated version for our ghost wolf forms. Both are rather transparent, much along the lines of our current unglyphed wolf form on live, and are nearly invisible when seen against light backgrounds, such as snow. Unlike the Glyph of the Spectral Wolf on live, the spectral version of our wolf is the same size as our unglyphed version.
But what about our Feral Spirits? Well, we're definitelly getting new versions of those too!
New Feral Spirits
As you can see, they're much larger than our ghost wolf forms. Currently on live servers, if we have Glyph of the Spectral Wolf activated, we're roughly the same size as our puppy pals. Since both glyphed and unglyphed versions of our ghost wolf are the same size, our new wolves will always seem large in comparison.
How about raptors? Well, at this moment in time our Spirit Raptors (if you use Glyph of Spirit Raptors) do not have new models. Perhaps we'll see those in future builds, but I have my doubts on those being terribly high on the priority list right now.