Speed increase for some
http://www.telegraph.co.uk/scienceandtechnology/technology/technologynews/5437749/BT-offering-20-MBps-broadband-for-free.html
But throttling for others
http://www.telegraph.co.uk/scienceandtechnology/technology/technologynews/5431052/BT-admits-limiting-download-speeds-and-throttling-iPlayer-traffic.html
http://www.telegraph.co.uk/scienceandtechnology/technology/technologynews/5437749/BT-offering-20-MBps-broadband-for-free.html
But throttling for others
http://www.telegraph.co.uk/scienceandtechnology/technology/technologynews/5431052/BT-admits-limiting-download-speeds-and-throttling-iPlayer-traffic.html