All the stores have switched to their fall styles and collections.
Most of the shops around here have started to sell their fall products.
ーAll the stores have switched to their fall styles and collections.
「どの店も秋のスタイルとコレクションに変更した。」
switch to で「切り替える・移行する」
fall style 「秋のスタイル:秋風」
fall collection 「秋のコレクション」
ーMost of the shops around here have started to sell their fall products.
「この辺りのほとんどの店が、秋の商品を販売し始めた。」
fall products で「秋の商品・製品」
ご参考まで!