expression
in a few days; in the near future; soon
Used for events expected to happen within the next few days, not for distant future. Often used in announcements or promises.
近日中にご連絡いたします。
I will contact you in a few days.
新しい製品が近日中に発売されます。
The new product will be released soon.
Means 'at a later date' and is more formal; often used when the exact timing is not specified, unlike 近日中に which implies soon.
Compound of 近日 (きんじつ, 'soon, in a few days') + 中 (ちゅう, 'within') + に (adverbial particle). The phrase is a fixed adverbial expression.