http://www.slashgear.com/tegra-2-serious-issues-delaying-notion-ink-icd-compal-tablets-0179993/
Unsurprisingly Nvidia claims everything is "on track".
Bad news if you’ve been avoiding iPad hype and holding out for a tablet based on NVIDIA’s second-gen Tegra chipset. We’ve just heard from a trusted source that all projects based on the new Tegra chip have been delayed, and that none are expected to arrive on the market before late August 2010. The issue – which is said to include a combination of hardware and software technical problems, as well as stability and Flash availability...
Unsurprisingly Nvidia claims everything is "on track".