Preorders for Nvidia's Shield will begin today, May 17, at Newegg, GameStop, and Canada Computer. Preorders are also available on Nvidia's Shield site.
Earlier this week, Nvidia announced that preorders for Shield at the aforementioned retailers would begin on Monday, May 20, but now cites "growing buzz" as its reason for making the portable console available sooner.
The Nvidia Shield is an Android-based portable gaming console using the company's Tegra 4 processor. The device is scheduled to ship in June. You can check out my hands-on impressions here.