Regarding our new product line, we would like to announce a special price discount.

关于我们的新产品,我们想发布一个打折特价通知.

词汇:

regarding:concerning somebody/something; about somebody/something 关于;至于
She has said nothing regarding your request. 关于你的要求,她什么也没说.
Call me if you have any problems regarding your work. 你如果还有什么工作方面的问题就给我打电话.

discount:折扣
to get/give/offer a discount 得到／给予／提供折扣
discount rates/prices 贴现率;折扣价
a 10% discount 九折
They were selling everything at a discount(= at reduced prices). 他们销售的所有商品都打折.
a discount shop(= one that regularly sells goods at reduced prices) 打折商店
Do you give any discount? 你们打折吗?