The replacement race for Kaohsiung Mayor is set to be held on August 15.
Han Kuo-yuto has lost the recall vote on June 6, with 42.14% of the voters turning out. The vote to remove was 939,090-25,051. The vote total itself is misleading, as Han's supporters would have stayed home due to the "absentee voter" provision -- 25% of eligible voters were required to cast ballots for the recall to count.
The replacement race was supposed to be held in 30 days, so it's not clear why there is this delay. Former Kaohsiung City Government Secretary-General Yang Ming-jou was appointed acting mayor.
Han was the Kuomintang Presidential candidate in the recent election (he lost). The recall was officially about Han's handling of flooding in the town (though presumably it was also part of the presidential political wrangling).