Hi Geri
thanks hope all is well with you too. The nicer weather has been good but as we speak (hence the quick response) I'm sat at my computer working on some Xerte developments so not really benefitting!
I would suggest changing that line to something like the following:
"We have worked closely with the supplier to fix accessibility issues. The known issues have been resolved but we are awaiting availability of the next release which is due by end of June 2021."
I know I replied over a month ago saying that the release should be available that following week and as it turned out that didn't happen due to other ongoing developments but we had a developer day last week and the current target for the release is now next week e.g. 7th June. So if you're updating your statement as we speak then certainly indicating resolved by 30th September should be fine but as I say those issues are already resolved it's just not so easy to cherry pick just those changes and the full release has taken longer than anticipated but is now imminent.
I should add that the good news about that delay is that other improvements have been added too and some of those are also accessibility related.
HTH
Ron