I mean.. It's sexing, so likely preflowering.. I definitely see pistils at the base of the leaf you're holding in the picture..
- Might just be a late one., rather than a photo..
I have 3 plants from the same batch of seeds, same strain. And 2 of them started flower a week earlier than the third one, which is also earlier than the breeder said it should.
I'd wait another week or two and see what happens. If it haven't gone into bloom by then, you can always just treat it as a photo and give it 12/12.