But what will happen to the value of my .mobi portfolio?
I honestly don't think many people are going to go out of their way for a personalised TLD.
The larger companies that have multiple campaigns and can't get the .com or some such are likely to go for it.
Likewise, I can see the MPAA getting .movie up & running... after all, how many something-the-movie.com domains have you seen lately?
Then again, I'm surprised by how few .TVs have been taken by the owners of the shows. They're usually taken up by domainers that then run some PPC or maybe a fan site.