No, there hasn't. I've heard whispers from somebody who's in a position to know that the numbers have been significant, but the company hasn't released any significant information or detail beyond the warranty provisions in the financials (about five million AUD, if I remember rightly.) That lack of information is one of the reasons why I'm leery of it as a potentially significant liability - why would the company not release that information if it weren't bad? (Note that I am unwilling to name the individual in question, or how they are in a position to know, so take that comment as "random internet commentator pontificating with details that can't be verified independently" - unless, of course, you also know somebody who's in a position to know this stuff and is willing to share.)
That's combined with the Canberra battery tests (per
https://www.solarquotes.com.au/blog/battery-testing-final-report/ - link is two years old now) - four units replaced, due to a combination of electrolyte contamination and electrolyte leaks. I'll acknowledge that those issues
should have been resolved by now, but still.
All that said, this is the sort of information I would expect a potential buyer to be given (likely under NDA) as part of due diligence, so we're in a worse position to judge than anybody who's in negotiations right now. Speculation is all we have; my position could very easily change were this information released and shown to be not as bad as I fear it might be.
(20min delay)