Harry Potter trailer released

It's an exciting day for Harry Potter fans as the trailer for the latest - and final - instalment of the series is released.

It sees Harry come closer than ever before to his arch-enemy Lord Voldermort.

'Harry Potter and the Deathly Hallows' will be released as two films.

The first part will arrive in cinemas at the end of this year, with the second part to follow in the middle of 2011.