Usually, when a company reaches the day before it's supposed to officially release a new gadget, you can be relatively sure that there won't be any more unexpected delays announced in the intervening 24 hours. We have to say "usually" because of Nvidia's surprise announcement today that tomorrow's planned launch of the Shield handheld game console has now been pushed back to "next month."
In a post on the official Nvidia blog, the company writes that "final quality-assurance testing has just turned up a mechanical issue that we’re not happy with." The issue can apparently be traced back to "a third-party mechanical component" that is now being worked on by the supplier. "We apologize to those who have preordered Shields and to all those who are waiting for them to go on sale. But we want every Shield to be just right."