I have no idea. Microsoft never makes it easy to guess what they are doing when they register domain names.
Their latest registrations :
The .com points to a plesk webpage, wich means they need to configure it. The .NET points to Bing with zero search results. What MS is gonna do with the domain names is unknown. I couldn’t find anything on Google so all in all pure speculations when it comes to MS produced Ultrabooks.
What is for sure is the WHOIS output :
One Microsoft Way
Redmond WA 98052
firstname.lastname@example.org +1.4258828080 Fax: +1.4259367329
Domain Name: gana3ultrabooks.com
Created on…………..: 2012-03-29.
Expires on…………..: 2013-03-29.
Record last updated on..: 2012-03-29.