You may have noticed press releases about the new (12th Edition) of Chambers due for publication around the 28th September. Hardback RRP £40. I hear that it only has about 200 new words in it so I will be sticking with the £23.50 11th edition for my niece's student son's present - which he won't thank me for anyway !
Some of the new words I have seen bandied about in the press are :-
dubstep, geek chic, paywall, green collar, rudas (definition = a foul mouthed old woman!)
freegan (definition = someone who rummaged for free food)
man-up, tombstoning and vuvuzela.