The latest Spenser is more of the same, except that the older he gets then the more comfortable he gets, and correspondingly less dangerous and less exciting. Even Hawk, and this is heresy I know, even Hawk comes over as ever-so-slightly loveable, friendly and tolerant.
The plot is ok, if a bit intricate, and at times it's difficult to remember exactly who all the characters are. Having worked out who they all are, it becomes increasingly difficult to care a great deal.
Having said this, we're still talking "Spenser", and it's still Robert B Parker. So the result is still far superior to most of the competition. Spenser fans like me will read and enjoy. New readers would be better advised to start with the earlier stories.
Finally, and I'm sure I'm not alone in this, I get the feeling that we're not far away from the time when Spenser and Jesse Stone (of the "other" Parker series) get to meet in print. They are referred to by mutual acquaintances more and more in their books.
Now, that will be one to savour.