It was well spoiled, a couple of days in advance, and by Marvel Directly, that Wolverine would return. However, they telegraphed his return on the Adi Granov exclusive that was announced a while back. I think this may be the only cover that features the return of the true Wolverine on the comic.
It will be interesting to see how he survived being encased in metal and how he got out.
The exclusive cover is shown below: