According to an email issued to NVIDIA Shield buyers, the Android gaming handheld is scheduled to make its delayed launch window by the skin of its teeth. "We want to thank you for your patience and for sticking with us through the shipment delay of your Shield," reads the statement. "We have great news to share with you -- your Shield will ship on July 31st." The Tegra 4 testing platform was originally scheduled to hit online retailers in late June, but