noun
something new but of poor quality
Refers to a newly made or recently produced item that is of inferior quality, often implying it is shoddy or poorly constructed. The term carries a negative connotation.
この家具は今出来で、すぐに壊れてしまった。
This furniture is something new but of poor quality; it broke right away.
今出来の服は縫い目が粗い。
Clothes that are new but shoddy have rough seams.
新品 means 'brand new' without any implication of poor quality, whereas 今出来 specifically refers to something new that is of inferior quality.
Compound of 今 (いま, 'now') and 出来 (でき, 'made' or 'produced'), literally meaning 'just made'. The negative connotation likely developed from the idea that something hastily or recently made may lack quality.