There were a few errors it seems in the March 2013 Previews catalogue. Some of them are minor, like Avengers #8 missing out the 50th Anniversary Variant. Of Deadpool #6 getting a non-50th Anniversary Variant.
Gambit #10 was solicited as Gambit #11 (though correct on the order form and online solicitions, it seems)
However Ultimate Comics Wolverine #2 was missed out of Previews in print and the solicitations sent to websites, and the evidence can only be found on the order form which lists both issues 1 and 2.
If you use Previews to keep your collection in order, you might like to take a moment or two to make sure everything's tickety boo.