Nokia Maps was supposed to be a Nokia exclusive application (atleast for quite some time) but then again why wait when you can get the application right now? Impatient XDA folks managed to grab the xap (no surprise here) and have posted the download link for the xap. If you have an unlocked device, you can test the Nokia Maps Beta right away which is currently officially available only for Lumia 800 Nokia phones. Hit the download link below to obtain the xap.
Alternate download link : Multiupload
Source: XDA thread