Have you heard of a new product?
(新商品のことを聞きましたか)
Comment:
"heard of a new product"→"heard of the new product"
(すでに出た話題の名詞:新商品のことはみんな知っているらしい。。。)
Also, “heard about” would be a bit more natural here: “Have you heard about the new product?”
“heard of” usually occurs in sentences with ever/never.
A: Have you ever heard of Harry Potter?
B: Of course! Who hasn’t?
A: Have you heard about the new Harry Potter movie?
B: No! They’re making another one? When will it come out?
PR