I know that the improvements in iclone allow you to export alembic files, but I want to know if you can actually import alembic from other packages?

Currently you can't, and nothing has been announced. It has been requested (although I don't know if there is a request in Feedback Tracker).

I'm interested in it as well for use with Houdini.

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It's not a deal breaker. Honestly, I'm happy with actually having access to your morphs. I look forward to seeing what else they have planned for iClone 7

May I just ask how you are using the alembic exports - just applications and then what you do to get them reasonably functional.  I just cannot get it to work.