Microsoft has decided to go toe-to-toe with Apple and Google by announcing that its own event for mobile app developers will be held in the same month. Microsoft’s Windows Phone Developer Summit will be held on June 20th and 21st, Apple’s World Wide Developers Conference will take place on June 11th and Google’s I/O event will be held from June 27th to June 29th. All three will take place in San Francisco. Microsoft has kept details quiet regarding what will be featured at the event. One thing is for certain; it is going to be a busy few weeks for tech enthusiasts.