Zara's 2nd pregnancy had been announced to the public. She miscarried about one month later. It was necessary for a statement to be released. Zara's 3rd pregnancy also ended in a miscarriage, but she didn't share that info with the public until a month after Lena was born.

If the Sussexes were still working royals, BP would have released a statement regarding the miscarriage, in a timely manner, only if the pregnancy had previously been announced or possibly if the miscarriage meant that previously scheduled events had to be rescheduled or cancelled.