Microsoft previously announced its Windows Phone Developer Summit early last month, but the company didn't reveal exactly what it was planning to show. We received an updated invitation today that hints Windows Phone 8 might be on the agenda. "A sneak peek of the future of Windows Phone" is promised in the latest invite for the June 20th event. While there's no direct mention of Windows Phone 8, we've heard from our own sources that this event will introduce developers to new ways of creating apps for the new Windows 8-based kernel of Windows Phone 8.

Windows Phone 8 is expected to include improved hardware support for multi-core processors, four screen resolutions, and NFC radio support with a contact-less "wallet experience." Microsoft is also expected to integrated its Skype app into Windows Phone 8, with native code support for developers and app-to-app communication support. We're likely to see some of these upcoming features demonstrated at the Windows Phone Developer Summit on June 20th, with new Windows Phone 8 handsets expected to arrive later this year.