I'd be REALLY surprised if they designed the hulls in SolidWorks. We design and build boats here, and we've tried for years to use SW for the actual hull design. It is possible, but the fairing tools are just not there. I read the press release repeatedly, and there is wiggle room in the verbage- they may have done the structural work, lots of attachments, FEA (probably not on the composites!), etc, but I doubt the hull itself...
It's been being added for a while- Move (and rotate) faces, replace face, etc. But those end up being features in a history-based tree. I think the hard part is trying to combine the non-history based tools that can be handy sometimes with the history based tools that are useful other times. The prize for the first company to do that right (no guarantee that Siemens will) is that everyone will copy it. Some prize :)
Maybe more relevant would be the question "When will you upgrade to 2008". The new features are awesome, but it's also massively different, which will be seriously uncomfortable for some... Once I got used to it (during Beta), I hated going back to 2007!