Skill Select Invitations to be issued once a month

SkillSelect invitation rounds for Skilled – Independent (subclass 189) and Skilled – Regional Provisional (subclass 489) will occur once each month, on the 11th day of each month, effective 11 August 2018. There is no change to the overall number of invitations provided each month. 

https://migrationalliance.com.au/immigration-daily-news/entry/2018-07-tss-and-skill-select-update.html