升职的英语说法

I have been promoted to a new position.

promotion/preferment

1 If you are successful, you can expect promotion. 你只要做出成绩, 就能指望获得提升.
2 He was hoping for preferment. 他希望获得提升.

注：例句来自《牛津高阶英汉双解词典》。

通知客人自己升职
Here I want you to know my promotion/inform you that I've got promotion.

promoted to a new position

I have been promoted to ...