Details in Google's source code reveal that company programmers have begun building a tablet version of Chrome OS, its browser-based operating system.
The work isn't a surprise, given that Google created mock-ups of a Chrome OS tablet more than a year ago. But it does indicate that a tablet incarnation of Google's Web-app operating system is a near-term priority, not just an idea.
Google acknowledged the tablet version of Chrome OS but wouldn't discuss details such as when the project's first version will be done. "We are engaging in early open-source work for the tablet form factor, but we have nothing new to announce at this time," the company said in a statement.