Dear WG 6.6 members, In addition to announcing the new chairman of WG 6.6, I would like to extend sincere thanks to Wolfgang Zimmer for his efforts during chairmanship of WG 6.6. This period has been an excellent period for WG 6.6. This was also evident in the many comments of appreciation and thanks that WG 6.6 members expressed during the nomination process. Best regards Augusto Casaca (Chairman TC6)