As mentioned earlier in the week, one can expect the WHO to only say anything remotely factual after vaccine makers have shared their detailed findings in the next week or two.
Pfizer's news yesterday was encouraging but there will surely be more twists and turns along the way.
If anything, I would expect vaccine makers to voice that there is reduced efficacy against omicron. However, they will definitely reassure the world that a solution can be found in a matter of months.