Nvidia has decided to open pre-orders today instead of May 20th as originally announced. You can buy yours for $350 at Newegg, GameStop and Nvidia's Shield site. The estimated ship date also appears to have moved up from 'end of June' to June 4th.

Google will be live streaming their 3-hour I/O opening keynote Wednesday at 12PM ET / 9AM PT. Tune in to watch the full coverage here. We'll be posting periodic updates summarizing the most important bits and linking to more in depth coverage throughout the day.

John Mahvi from Intel IT diagrams the financial logic the company uses to justify a regular refresh of Intel's PC fleet. By maintaining a refresh cadence of approximately 3 years, Intel gains the benefits of increased security and manageability capabilities, increased productivity and lower overall costs.

There are wildly differing viewpoints on whether or not the tablet is on its way out, as you might guess. One perspective is that of the smartphone taking over what the tablet does; which is basically content consumption and creation, albeit the latter on a more limited scale than, say, a standard desktop or convertible Ultrabook.