you should be able to use the suppression formula option on the field format using kostya's formula.
datediff("m",Date Release,currentdate)>= 9
Note that is only calculating off the month value and not the day value
if you need the day then if would be something like
currentfieldvalue>dateadd('m',-9,currentdate)
also either formula can be used to supress the entire row as a formula used in the section expert or used to remove rows in the select expert.
Edited by DBlank - 01 Jul 2014 at 5:07am