Sorry but the context of this photo is weird. There are so many in here that seem to invite speculation, either their PR is lousy or they are deliberately trying to wind people up.
Why would someone recovering from surgery be in hiking boots?
Why choose a spot with the tree behind them in full leaf showing autumnal signs? Yes it may be an evergreen but to my (admittedly untrained) eye it doesn't look like one.
Why no rings? Yes it could well be that she can't wear them for medical reasons - but if so why not just explain that, or simply don't show her hands in the photo?
Didn't they think all this would invite speculation, or do they just not care?
Kate is not a private individual, she is a public figure whose role is funded by the taxpayers. Although we are not of course entitled to details of her recovery or medical info, I think that we are entitled to clear communication about her progress, and this photo isn't it; it invites more questions than it answers. Some posters may be happy being patronised by this kind of non communication but I'm not.