Also, the term "Information Worker" is something that I've only heard in the last 12-18 months.   

But, I don't think the "concept" of BPM is anything new - I remember some topics at university (1991) relating to "process re-engineering" - ie. when computerising and installing new systems, to make the software FIT to the business.

 ie. don't just automate what-you-got : make it better while the opportunity arises.

I guess the tools are more refined, and easier to use - and the availability and cost of systems such as Sharepoint has led to greater adopition - and thus MORE of it around.

And you're right - the realisation of business process around "knowledge" - and "content" is far greater these days.  Competitive organisations wanting an "edge" - the same goes for the explosive growth of BI (business intelligence).

"Processes" have always been in manufacturing and construction - safety aspects, etc.  The "white collar" world is now seeing it much more.   Better tools - and better technology - for an "old" concept.