The programme of extension of the insertion device straight sections from 5 to 6 m is progressing according to schedule. As of December 2011, ID18, ID30, ID24 and ID20 have been extended and equipped with 6 m long narrow aperture (8 mm) NEG coated ID chambers. The modifications were performed during the long shutdowns and at each occasion the machine was returned to user operation without any difficulty. Another set of five sections has been prepared and will be installed during 2012. The design of the first 7 m section, which will be installed at the end 2012 on ID23, has been finalised. The preparation of the installation and the procurement of equipment have started.