as of = as from / or 'at' or 'on' Ivanna Bümbüm got the bounce as of March 1. (she got fired on March 1 /or/ she got fired from March 1, i.e. her contract terminated on March 1.) Our basketball team scored 67 points as for 3:20 pm. (since 3:20 pm it has collected 67 points.)
About the future, 'as for' can mean 'until a given time' As for tomorrow we won't pick up any phone call for strike reason.