Well, we will have to wait and see! I hope that there will be some sort of understanding that we submitted our applications sometime between the two versions of the checklist. I don't expect that, but I HOPE!OMG same here... The new version of cit0007e-2 which require colour photo of all pages in color was in 06-2021... And I submitted my application with the old version of cit007e-2 which only require copy of bio pages.
It is not a big deal anyway, if returned, we will need to add the missing passport pages, update the checklist, and maybe update the physical presence and applications forms. It is not rejection, just an incomplete application.