This document describes activities relating to greenhouse gas inventory reviews conducted during the period November 2008 to October 2009, and activities planned for 2010. It provides information on the Parties subject to review, the training and participation of experts in the review process, the meeting of inventory lead reviewers, the progress of the development of the CRF Reporter software in relation to reporting of activities under Article 3, paragraphs 3 and 4, of the Kyoto Protocol and the progress in updating the roster of experts.