An improved component or replacement item, usually applied to technology
An improvement
An upward grade or slope.
verb
(intransitive) To improve in condition or status.
(intransitive, computing) To replace a program with a later version of itself, a version having a higher version number or marketed under a more recent product name.
(transitive) To improve the equipment or furnishings of or services rendered to
(transitive) To improve, usually applied to technology, generally by complete replacement of one or more components