The deb files are GPG-signed directly. Once you have the GPG keys imported and have the dpkg-sig package installed, simply do "dpkg-sig --verify armory*.deb".
Perfect. Thanks for that tip. I see it now at the bottom of the page, but it might be helpful to link to that from around the deb file download link.
I'm very impressed with Armory -- finally tried it after 1+ years of hearing about it. You've done a great job.
One question: does Armory 0.87 beta implement BIP 32 for its deterministic wallet?
No one should've implemented BIP 32 yet (well,
released it). It's not final. And now there's murmurings of it possibly changing/being tweaked. I have code that implements the current implementation of BIP 32, and I can tell you how to access it via code ... but it's not ready yet.