Google recently updated the Android Market, giving developers a specific place in which to describe the changes that come with the latest update. Some developers have already been including short descriptions of the changes which come in new updates, but never before was there a dedicated place for developers to list what is new about the latest version of the app.
Android Central observes that the new feature is not much more than "a box in which to enter text" that is displayed in Android Market app summary.
As for when we'll start seeing this feature commonly used by developers, EuroDroid tells their readers to not "expect to see it on every app straight away – it’s something for app-makers to insert when they next push out an upgrade, like the old SD card app-saving tool."
However, Androinica adds that they have already seen at least one app, ActionComplete, using the "Recent changes" box.
Below is part of Google's announcement regarding the new feature:
Recent changes are linked to each app version, so with each update, you must submit items to the recent changes field. We recommend that each recent changes update is specific to the app version; previous changes will not be displayed to the user at this time, but may be visible in the future. Furthermore, the recent changes field (unlike the app description) have no impact on the search index, i.e. it will not impact the search results for your app.
Image from Android Central