LONDON (AP) — The Princess of Wales says she is “making good progress” in her cancer treatment and will attend Saturday’s royal Trooping the Color ceremony, Kate’s first public appearance since her diagnosis.

The 42-year-old wife of Prince William has not made any public appearances this year. She announced in March that she was undergoing chemotherapy for an unspecified form of cancer.

“I am making good progress, but as anyone going through chemotherapy will know, there are good days and bad days,” Kate said in a statement released Friday, adding that she faces “a few more months” of treatment.

“I’m looking forward to attending The King’s Birthday Parade this weekend with my family and hope to join a few public engagements over the summer, but equally knowing I am not out of the woods yet,” Kate said.

The announcement is a significant milestone, but does not mark a return to full-time public duties for Kate.