Can a PDF have variables modifiable by a script?

Hi,

Sometimes, we need to modify the release version in a product release notes file and many other SW guides and manuals after the documents have been approved. It happens when R&D make last minute changes to a SW package (special drops) and decide to increment the SW version. Is there a way to inject the SW version that appears on the PDF front page of the documents as a variable that can be modified by scripting? In other words, can the PDF files be input to some scripting language or plugin that allows modifying the version (as a variable) automatically rather than having to edit the PDF files manually, or modifying the FrameMaker/WORD source files and reproducing a bunch of PDF files?

Example by scenario:

We have a SW drop this weekend. The currently planned version number right now is 1.1.000. It is possible that R&D will make last minute modifications to the SW and rev it up to 1.1.001 over the weekend.

A bunch of PDF files already indicate on the front page ver 1.1.000, and the technical writer might not be available over the weekend (we do have a life sometimes). Is there some mechanism to enable R&D to run a script on the current PDF files and modify the version listed on the front page of each PDF to say 1.1.001 instead?

Many thanks in advance,

Hani