From Cricinfo
The ICC has announced that Kookaburra, the Australian bat manufacturer, have agreed to the immediate voluntary withdrawal of its graphite reinforced bat from international cricket.
The offer was made after the ICC informed Kookaburra that it had received an opinion from MCC, the guardian of the Laws of Cricket, that the bat contravened Law 6 and, in the MCC's view, was illegal.
With several players in the world - including Ricky Ponting, Justin Langer, Nathan Astle and Sanath Jayasuriya - currently or soon to participate in international cricket matches, Kookaburra has undertaken to re-supply all international cricketers with alternate bats as soon as possible and the ICC has accepted its assurances that this will be done with all possible speed.