a warning that something is going to happen, usually so that you can prepare for it

This note is just to give you a heads-up that Vicky will be arriving next week. 这张便条只是提醒一下你维基下星期要来。

a short talk or statement about how a situation or plan is developing

The boss called a meeting to give us a heads-up on the way the project was going. 老板召集会议通报计划进行的情况。