Period: 2018.09.19 Maintenance - TBA
Period: 2018.09.20 - 2018.09.26
Event quests period: 2018.09.19 Maintenance - 2018.10.03 06:00
Event challenges period: 2018.09.20 00:00 - 2018.10.03 23:59
Period: 2018.09.19 Maintenance - 2018.09.25 23:59
Soon™?
Meanwhile you can check changes THERE
Also check out various sales THERE