9to5Google said that Google will be planning an event on June 6 to show off “The Next Dimension of Google Maps”. The occasion comes only five days before Apple is expected to show off details of iOS 6 at its Globally Developers Conference keynote.

“At this invitation only media gathering, Brian McClendon, VP of Google Maps and Google Earth, will give you a behind the scenes look at Google Maps and discuss our vision. We will also demo some of the latest technologies and provide a sneak peek at upcoming features that will help persons get where they want to go – each physically and virtually. We wish to see you there.”

Apple has depended on Google to provide the mapping features in iOS since the iPhone’s initial release back in 2007. But as competition among the two companies has ramped up, Apple has been operating to strengthen its skills in mapping with the exchange of several small companies and has been gradually moving specific location and mapping services in house. That changeover is expected to culminate in iOS 6 with the core mapping application moving from Google to Apple.

The timing of Google’s event normally leads to speculation that it has been particularly planned to upstage any Apple announcement about mapping in iOS 6 and to show what users will be losing out on with the transition by Apple.