It's interesting that you say that because from everything I've heard talking to people I work with and in other departments who have been here a while, the opposite is true.
The conventional thought is at least over the past 2 years or so, the stress has gotten lower. Most of this is from the departure of a particular executive (no, not Steve) who was known to crack the whip really hard on people. I also hear those same people talk about how quality has suffered as a result of his departure, and they actually long for the higher-stress days when they had to work longer hours but were happier with the finished product.