I just assumed because the box and board were different colours that i had a later/earlier revision or you hada 'review' sample, only when i checked my box i saw it ha no PLUS.
I would imagine so with a BIOS update, but don't expect the longevity to cover Nehalem procs (LGA1366). All you need do is head to the manufacturers website to find the answer, which I have already done for you here
name='ASUS' said:
- Support Intel® next generation 45nm Multi-core CPU