It’s no secret that Microsoft is craving developers for its budding Windows Phone platform, and what better way to bond with your community of programmers than to have a private little shindig? Microsoft has begun sending out invitations to what is being called “Developer Summit,” which will take place in San Francisco, California on June 20th and 21st. Details remain a bit on the sketchy side, but as the invite suggests, Windows Phone development will be the focus and it appears that Microsoft may be working on recruiting some new talents to help flesh-out its mobile platform’s ecosystem.