If you’re dying to know what HTC has been working on for the past few months, we suggest you mark September 15^th on your calendar.  HTC has just send out invitations to the media to a press event they will be hosting on September 15^th in London.  As usual, no details about the event have been revealed, but we’re pretty sure that HTC will be showing off at least a few different Android and Windows Phone 7 devices.  The date does fall pretty close to the expected launch of the HTC Vanguard on T-Mobile USA, but HTC typically does not announce U.S. specific devices at their international press events.  That being said, the HTC Vanguard could be launch in both the U.S. and EU just like the HTC Dream.   

Other phones we could expect to see unveiled at HTC’s London event include the HTC Ace (Desire HD), HTC Mozart, HTC Vision, HTC Schubert, and the HTC Glacier.  If that list looks a bit long, keep in mind that HTC is expected to unveil 6 new phones and ship over 8 million units in Q4 alone.