A "new winery" refers to a recently established or newly opened place where wine is produced, typically with a fresh approach or in a modern setting. Full definition
It was SO much better that way — we enjoyed ourselves more and discovered so many new wineries. (seekingsunshine.com)
But the real story starts in 1966, 50 years ago, when Robert opened the first new winery in the Napa Valley after the 1933 repeal of prohibition. (entrepreneur.com)