doc release numbering

[obair81 at comcast.net]

Due to things beyond my control, we (I) had to turn out a doc set last week for a new hardware product, and next I will have to turn out another (updated) doc set for the same product.  The product name/number have not changed.

Is there any sort of standard for numbering versions of the docs, if the product is not changing?

I have not dealt with this question before.

The voice(s) of experience would be welcome.

Thanks.

best,
Paul