Maps are a core part of what Geospike does. Any change to the mapping system provided by iOS affects Geospike, both through the maps embedded in the app, and the functionality of the official Maps app which Geospike can send locations to.
Before you update to iOS 6 (which Geospike fully supports), you may wish to research the significant map-related changes introduced in iOS 6 so as to make an informed decision on whether you want to update to this new system, and get those changes. Once you update, you can’t go back.
This release also marks the end of support for the iPhone 3G. We were proud of our pre iOS 5 support, however it is not possible to target both iOS 6 and iOS 4.2.1 at the same time anymore (a limitation of Apple’s developer tools), which means we were forced to drop 4.2.1 support, and thus, the iPhone 3G. Furthermore, Geospike 2.2 is the last version that will run on iOS 4.3. The good news for iOS owners is that even the 3GS can run iOS 6, which together with convenient OTA system updates starting in iOS 5.0 means there are few reasons not to update your OS.