appearance since christmas. the cbs evening news starts now. the world may be just hours away from seeing princess catherine for the king s birthday. good evening. i m norah o donnell, and thank you for being with us. tomorrow, kate middleton says she will attend the trooping of the color in honor of her father-in-law. it will be her first official engagement in almost six months, and it comes on the heels of this new photo of the princess, along with a very personal statement. 42-year-old kate said, like anyone going through chemotherapy, she has her good days and bad days. she also said that she has been blown away by the many kind messages of support and encouragement. cbs s ramy inocencio is at buckingham palace with the latest. reporter: i m making good progress, said kate middleton appearing in this new photo taken on the grounds of windsor castle this week. the statement is her first since march, when the princess of wales revealed abdominal surgery had found