1"This year" — the current calendar year; usually read ことし in speech, with こんねん as a more formal/written reading.
今年の夏はいつもより暑いらしい。
This summer seems to be hotter than usual.
今年で結婚して十年になる。
This year marks ten years since we got married.
今年こそ日本語能力試験に合格したい。
This is the year I really want to pass the JLPT.
今年の新入社員は例年より人数が多い。
This year's new employees are more numerous than in past years.