The Google Mini has been an important part of our Enterprise Search offering since it was first introduced in 2005. It’s had a good run, but beginning July 31 we’re discontinuing the product because its functionality can be better provided by products like Google Search Appliance, Google Site Search and Google Commerce Search. We will of course continue to provide technical support to Mini customers for the duration of their contracts, and will reach out to them shortly with more details.
link: http://googleblog.blogspot.com/2012/07/spring-cleaning-in-summer.html