Engadget, among others, got a shiny new invite from Microsoft to a press conference being held on October 11th in London at 2pm (9pm ET, 6am PT). Most likely this is going to be to announce the availability of Windows Phone 7 and to showcase any changes made since the original announcement of the new OS at the beginning of the year. Since this is supposedly going to be a three and a half hour conference, other announcements or devices are expected to be announced as well.