Microsoft acquired Bing.com in March, and has a network all set up:

but as we reported last week, there’s that pesky little US Patent and Trademark Office to get around.  The problem is with Bing Mobile, which is just too confusing for the USPTO.  But apparently that will soon be cleared up, too, as evidenced by a note on the Bing mobile site:

And the ever-watchful MG Siegler over at TechCrunch may have even spotted the logo in a favicon:

While we freely admit we have grown to like Kumo, the evidence for Bing keeps mounting, and people even seem to like it, according to a poll Emil Protalinski is running over at Ars Technica.  Who knew?