Mark your calendars, Windows Phone fans. Nokia and Microsoft have revealed that they'll be coming together to host an event on September 5 and, as you can see in the invitation we received, Windows Phone will be the focus. The event is taking place in New York City and the doors to the big shindig will be opening up at 9:30 a.m. Unsurprisingly, the invitation doesn't specifically mention what Nokia and Microsoft have up their sleeves for the gathering.

So what will the two companies have in store? Judging by the small live tiles on the invitation and the fact that Windows Phone 8 is due this fall, some new Windows Phone 8-powered Lumia hardware seems like a reasonable guess. It's also worth noting that Nokia World will be kicking off in Finland on the same date, so September 5 will be a big day for Nokia and its fans. As usual, you can bet that we'll be bringing you all the news from this Nokia-Microsoft event as it happens. What are you hoping to see the two companies introduce on September 5?