There's an annoying problem with the french translation on the "Features" window of SQL Developer (still true in 4.0.2 version).
The "update status" has been translated by "Status de mise à jour" which in fact means "update status" but here "update" is been used as a word and not as a verb, so the translation is hard to understand and is false.
The proper way of translating "update status" in this case would have been "appliquer les mises à jour" which means "apply updates".
Thanks for reconsidering this translation.
The Tools > Manage Features dialog in 4.0 replaces and enhances the Tools > Preferences > Extension dialog in in 3.2. This new dialog was inherited from JDeveloper 12.1.3, so I logged bugs against both SQL Developer and JDeveloper.
Thanks for reporting this issue,
SQL Developer Team