The release was made last Sunday but only now we noticed it was out. You can get both versions without having to buy them separately, meaning you can have it for X-Plane 10 and 11 at no extra cost.
There seem to be no major changes except the added compatibility for X-Plane 11 so don't expect anything new or much different from the X-Plane 10 version.
Where to get the X-Trident Bell 412 for X-Plane 11
You can get it (along with the version for X-Plane 10) here.