This release introduces a new feature for the Notifications: the Watched Entities. It is disabled by default but you should try it to experiment it because it will replace the Watchlist Application soon.
For the users, we now have more usable notification filter settings and a nice helper when you edit a Database List field.
For developers, it is easier to propose an extension containing REST resources, or to customize the Flamingo LESS code. We have also exposes more database columns in the Query Module for users who dont have the programming rights. The notification filters AST (Abstract Syntax Tree) proposes new types of nodes to create complex filter queries. There are also new facilities to avoid using SyntaxFactory, to make Extension Manager faster, or to identify skins elements with proper IDs.
As usual, this release brings bug fixes (15 in this one!).
Full release notes available at http://www.xwiki.org/xwiki/bin/view/ReleaseNotes/Data/XWiki/9.8RC1/