I think you will get the unofficial score report at the test centre. Refer gmac link: http://www.mba.com/the-gmat/nex-gen/ans ... tions.aspx
From the link:
Q: Why won’t the unofficial score report I get at the test center include my Integrated Reasoning score?
A: Since the Integrated Reasoning section is new, we need to be able gather data about each question that is administered and equate candidates’ performance to a common scale. IR scores will be reported after we adjust for the minor differences in difficulty of the test forms so that IR scores are comparable across time. This process takes approximately 20 days. Official Score Reports with all scores, including IR, will be sent to schools when all scores are available.