No - it creates a poor user experience to force people who don't care about the innards of the beast to view them every day when they come to interact with it.
You are not only asking that we be notified of updates, but that changes to the system are discussed in advance of the update so the community can weigh in on changes prior to implementation.
The system already exists for your to do that, here on Meta. Those people that care about features of the sites (existing, proposed, and new) visit here and either suggest new features or changes, participate in conversations regarding new features and bugs, and complain about (or suggest alterations) to changes implemented without ever being announced or discussed on here.
It works quite well, as-is. The community has rejected a few feature changes (none come to mind, but I know Jeff was convinced that he was wrong at least a few times and reverted or modified a feature), suggested most of the feature changes that have taken placed, and discussed thousands of other changes that haven't been, or won't be, implemented.
In previous discussion on announcements, the general consensus has been that the vast majority of daily users (as in, 95% or more) don't care. Adding an alert would not only pose as a distraction, but it would actually create a problem where one didn't exist.
Those that are interested in the day to day changes and overall operation of the various sites are free to participate here.