Nokia and Microsoft to hold Windows Phone 8 event on September 5
BGR

Nokia and Microsoft have just invited media attendees to come to a Windows Phone-related event scheduled to happen on September 5. Based on the design of the actual invite itself, it seems that the two companies are gearing up to launch some new devices that are possibly powered by Windows Phone 8 software. Nokia Maps was also highlighted in one of the tiles on the invite, so perhaps there's some navigation-related new stuff in the event as well.

What Else You Need To Know:

- Microsoft and Nokia are expected to introduce new hardware that will run Windows Phone 8.

- There are rumors that Nokia will introduce a Windows Phone-powered tablet at the upcoming event, but it is more likely that it will just stick with unveiling handsets instead.

Other sources

The launch can’t come soon enough for Nokia, which has been hampered in its marketing efforts for its current Windows Phone lineup by Microsoft’s disclosure that current Windows Phone 7 devices won’t be able to run the new software. - Ina Fried, All Things D  
Engadget
Nokia and Microsoft announce September 5th Windows Phone event
Other
Aiming to Precede New iPhone, Nokia and Microsoft Schedule September 5 Event  

Microsoft and Nokia would be likely to show off the first Windows Phone 8 devices at the event.

Other
Nokia and Microsoft holding Windows Phone 8 press event on September 5th
BGR
Nokia and Microsoft schedule September 5th event; first Windows Phone 8 Lumia phone expected
PhoneDog
Nokia and Microsoft planning Windows Phone event for September 5  

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.

Other
Nokia And Microsoft Will Announce A New Windows Phone On September 5 (NOK, MSFT)
Gadgetorama
Nokia and Microsoft to hold Windows Phone 8 press event on September 5th
WM Power User
No surprise- Microsoft and Nokia holding a joint press event in US on the 5th September
GottaBeMobile
Nokia Unveiling Windows Phone 8 Plans on September 5th  

So, it would appear that Nokia and Microsoft want to fit the announcement in ahead of the iPhone 5 announcement which is currently rumored to be taking place on September 12th.

Mobile Syrup
Nokia and Microsoft to unveil new Windows Phone 8 device on September 5th
 
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