McKinsey APD Application Deadline

Hello,

I was checking out the McKinsey website for APD application deadlines and found the deadline is July 2021 for PhD candidates graduating in 2021. Isn't this generally for students graduating the next year, i.e. in 2022? Firms generally have application deadlines the summer prior to the student graduating, and as far as I can see, BCG and Bain have stuck to this with both having summer '21 deadlines for consultant roles in '22. 

Has Mckinsey changed the timing this specific year or is there something I'm missing?

Thanks!