To be strictly accurate, right now, under the terms of the Berlin mandate for the Kyoto Protocol, developing countries are expressly exempt from taking on additional commitments.
There are commitments that are referred to under the convention, but those are the commitments that were drafted prior to Kyoto and continue to be elaborated on. It has to do with the preparation of some greenhouse gas inventories and any other kinds of actions that countries are taking to meet both their development and greenhouse gas reduction objectives.