It looks like Apple has struck again and is yanking Evi from the App Store. I have it on my iPhone 4 and find it very useful. I had hoped more integration would come down the pipeline, but now it looks like the only way I'll get a Siri-like clone is to jailbreak my device. Grrrr.
Apple Prepares to Pull Siri App from App Store (via TechCrunch)
Apple Prepares to Pull Siri App from App Store (via TechCrunch)