During the search breakfast back in early August, Google did say that they'd submitted the app. Here's a CNET article that covered the search breakfast: http://news.cnet.com/8301-1023_3-57489395-93/google-exposes-... The relevant part is "The update to the Google Search app has been submitted to Apple, and Google expects it to be approved in the next few days, Huffman said."

If anyone wants to watch Scott Huffman's demo of natural language voice search from the search breakfast, the relevant section of the video is on the web: http://www.youtube.com/watch?v=8a2VmxqFg8A#t=10m43s