Pip award

Hi my son has received his pip award after filling in the pip ar1 form.
His daily living was awarded at the same rate but I think he should have got more points for mobility on his award form it’s says “at this time I still can’t award you pip for help with your mobility”
After all of the news about pip mobility I thought he would have been awarded this! But he only got 4 points, he can’t leave the house even on familiar journeys alone, as I stated on the form.
Is it possible it will be reviewed, along with the 1.6 million? it’s the at this time part that has me wondering?
Or is that a standard thing to say?
Thanks