Amazon is clearly looking to define its Kindle Fire’s software experience as far as it can go, and one area left is voice search.

Amazon had a few choices. Build something from the ground up or buy an established company. It looks like it has bought Evi, the voice guided search. While neither side has publicly commented on the deal, all of Evi’s directors and its company secretary have been replaced by staffers linked to Amazon UK.

One thing is for sure, whatever Amazon’s plans for voice search, we will surely see some evidence when it launches it next incarnation of Kindle devices.