Catherine, Princess of Wales, said on Tuesday that her cancer was in remission, lifting a major cloud from the British royal family, which had struggled with serious health concerns for both her and King Charles III.

“It is a relief to now be in remission and I remain focused on recovery,” Catherine, the wife of Prince William, wrote on Instagram.

“As anyone who has experienced a cancer diagnosis will know, it takes time to adjust to a new normal. I am however looking forward to a fulfilling year ahead,” she added. “There is much to look forward to.”

Catherine said last September that she had completed chemotherapy for her cancer and her goal was to remain cancer free. But Kensington Palace, where she and William have their offices, declined to say at that point whether her doctors had declared her medically free of cancer, or whether she was undergoing any other treatment.

The palace has never confirmed the type of cancer that struck Catherine, how far it had progressed, or what other treatment she was undergoing, beyond chemotherapy. The cancer was detected in January after she entered the hospital for 14 days for abdominal surgery.

Catherine’s announcement on Tuesday seemed more promising than the update last fall, though Kensington Palace again offered no additional medical details. A palace official cautioned that Catherine would still only return to official duties on a gradual basis over the rest of this year.

Her announcement that she was in remission came as she visited the hospital, the Royal Marsden, in west London, where she had been treated. “My heartfelt thanks goes to all those who have quietly walked alongside William and me as we have navigated everything,” Catherine wrote.

This is a developing story. Check back for updates.