Likely to be a “transition period” where Google figures out how to index new top level domains.
Today’s Google webmaster video is about new top level domains.
Google engineer Matt Cutts already grabbed some headlines when talking about new top level domains and search results last week.
I’m not sure if Cutts answered the user’s question, which had to do more with rankings and Page Rank. Instead, he responded to the question of if domains on these new TLDs will be indexed, and any hiccups to expect.
Cutts points out that we already have hundreds of new TLDs, and Google has done a pretty good job indexing domains on these TLDs to provide the most relevant results.
But indexing sites on new TLDs isn’t automatic. He says there will be a transition period while Google (and other search engines) figure out what the valid new TLDs are and what (second level) domains are on them.
(By the way, your email software might have some initial challenges going through this same transition.)