Next flagship Lumia is on its way: Invites sent out for 14 May unveiling

The next addition to Nokia's Lumia line is to be unveiled in a matter of weeks.

Invites to the launch event of the as-yet unknown Windows Phone 8-based device were sent out on Friday for an event on 14 May.

The event will take place in London and, while the invite gave no hints of which handset is on the way, it did confirm the event would reveal "the next chapter of the Lumia story".

Several rumours of new devices from Nokia have surfaced in recent weeks, including an aluminium version of the Lumia 920, apparently called the Nokia Catwalk or Lumia 928. Another rumoured device is the Nokia EOS, also known as the Lumia 1000, which is said to include the 41-megapixel sensor found on Nokia's 808 PureView.

While both these rumours sound somewhat dicey, the event is a global gathering, suggesting that the company will be unveiling a flagship device rather than something in the low-to-mid range. During Nokia's recent first-quarter earnings call, CEO Stephen Elop promised a "hero" Lumia handset would surface during the current quarter.

Whatever Nokia has in store, ZDNet will be on hand at the event to bring you all the news and hands-on action. 

Nokia's current flagship device — the Lumia 920 — wasfirst shown off to the world in New York in September 2012.