I found a really intriguing article about a transition to a software product line approach. This transition in many ways mirrors the transition that my current employer is going through. Here are the three parts (it's a fairly quick read):
Here are some interesting quotes:
"With the sequential approach, after the transition in one area was complete, the need for transition in the next was more clearly illuminated."
"The "people issues" are always the most difficult when imparting change in an organization."