IBPS has not yet announced clerk common written exam.So its not possible to know what age limit they would prescribe.
But according to previous year advt.,the age limit for general category candidates was minimum:20 years & maximum 28 years
Lets say, IBPS releases Clerk CWE notification in the month of August 2014 & asks candidates with age upto 28 years, as on 1.08.2014 only can apply.
In such a case you are eligible to apply
Most probably you will be eligible to apply for IBPS Clerk CWE 2014 since they would start the recruitment process for clerical cadre by August 2014.
So go ahead & start preparing!!