noun
major upgrade
Computing term for a significant version upgrade of software or systems, as opposed to a minor update.
このソフトウェアのメジャーアップグレードは来月リリースされる予定です。
The major upgrade of this software is scheduled to be released next month.
Variant with interpunct; less common but seen in some contexts.
A minor upgrade, typically with smaller changes or bug fixes, as opposed to a major upgrade.
A general update, which can be minor or major; メジャーアップグレード specifically emphasizes a large-scale version change.
Wasei-eigo (Japanese-made English) from 'major' + 'upgrade'.