We're constantly improving the DevZone and making it easier for developers to get what they need and get back to their development. To that end, we recently updated the Tegra Resources page. Instead of disperate individual downloads, we've created logical sets of materials and assembled them together. We also moved the devkit OS images back to the Resources page and now have a public version of Android 3.2 "Honeycomb" for the Ventana devkit. 

We'll be adding more toolkits and packs over the coming months so keep an eye on the Tegra Resoruces page.