Looking at the last quarterly, they had $2.36m in the bank with...

Looking at the last quarterly, they had $2.36m in the bank with forecast current quarter expenditure of $1.16m. So really they have enough cash till end of March 2019 based on forecast expenses. If there is any hint of future CR, then late October and early November is a good sign they will raise based on the short history of this company when it listed on the ASX. Maybe its pure coincidence, but the last 2 placements were done on 20th October 2016, and 3rd November 2017. Both were raised at 3.4c and 4c respectively, and both were heavily oversubscribed to professional and sophisticated investors.

In the last placement, the SP went for a nice run when Jim Dorrian forked out $250k and gave confidence to shareholders during a bull run in the spec end of the market. Lets hope he does that again but i'm not sure this time the SP will spike as the hype is gone and uncertainty prevails about the success of next batch of wafers.
My guess is they will raise between $3m and $4m @4.5c to sophisticated investors again.
All in my humble opinion of course and happy to be proven wrong.