Will the stamping period for Cap Exempted H1B visa beyond the old valid period?

Hi ,I have got H1B from Employer A in 2014 and got STAMPED on October 2014 valid till September 2017. But i have not yet traveled on that visa.I joined new employer in Mar 2016.My H1B is revoked by my previous employer in July 2016.My new employer applied for cap exemption and it got approved

If I go for the visa interview again, will the stamping be given with valid period only till Sept 2017 or beyond it?

Thanks in advance.