noun
semi-recent release; almost new release
Used especially for video or media that is not brand new but still relatively recent, often in rental or sales contexts.
この準新作はレンタル料金が少し安い。
This semi-recent release has a slightly lower rental fee.
準新作コーナーで気になる映画を見つけた。
I found an interesting movie in the semi-recent releases section.
旧作 means an older or past release, typically older than a 準新作.
Compound of 準 (jun, 'semi-', 'quasi-') and 新作 (shinsaku, 'new work/release'). The exact historical derivation is uncertain, but the term follows a common pattern for indicating a near-new status.