Following the release of iOS 6.0.1 to end users, Apple has released a beta version of iOS 6.1 to developers. This beta is for iPhones, iPads, and iPod touches. A beta version of the upcoming Xcode 4.6 is also available for developers.
Apple describes improved Map Kit searching in Maps for developers:
The Map Kit framework now lets you programmatically search for map-based addresses and points of interest. The
MKLocalSearchclass initiates a search for map-based content using a natural language string. In other words, you can enter placename information or portions of an address and have Map Kit return search results that match the information you provide. For example, searching for the string “coffee” would return the location of local coffee bars along with information about each one.
We will update when new information about iOS 6.1 appears.