this autumn; this fall
Refers to the autumn of the current year. Can be used as a noun or adverbially.
今秋は紅葉がきれいだ。
The autumn leaves are beautiful this fall.
今秋、新しいプロジェクトが始まる。
A new project will start this autumn.
A new smartphone will be released this autumn.
This autumn's sports day was postponed due to rain.