This is the 4439th most frequent Japanese word.
売り出さ
"売り出さ" means "to put on sale" or "to launch (a product)."
Here, "売り出されます" refers to the act of releasing or launching a new product, in this case, an album.
彼の新しいアルバムは来月に売り出されます。
His new album will be launched next month.
"売り出しました" in this sentence indicates the act of introducing or promoting a new product to the market.
その会社が画期的な製品を売り出しました。
The company launched a groundbreaking product.
The term "売り出しました" signifies taking a product (a new work) and actively marketing or selling it online.