Re: SPOILER ALERT: Anyone bothered by....
Having not been careful enough with spoilers I knew to expect it and thought I wouldn't like it, but in the end it doesn't bother me at all.
I'm not a massive fan of the bone claws as a concept, I always preferred the idea that the claws were something that had been implanted in him, adding more to the idea that her was turned into a weapon. However, since they've established in the comics for 20 years and in the films as well I can live with it, they can look pretty cool.
For DOFP, they could easily bring the adamantium claws back with Magneto on side but if they stuck with bone I wouldn't mind. I'd be surprised if the 1973 Wolverine had adamantium, that wouldn't just ignore Origins but also X-Men and X2. I doubt Singer would contradict his own films that much.