Good evening Maarten and welcome to the Events Calendar Support forum!
Thank you for reaching out to us.
I would love to help you with this topic.
I want to apologize if we fell short of a promised date. Typically we give ball park figures of release dates.
As you might guess, sometimes there are slight glitches in the development process and things take slightly longer than expected.
To make a long story short, we want to make sure that we release a solid update, rather than one that is not.
As such, we are aiming more at mid-October at this point (once again, if all goes well).
We are sorry for the inconvenience this might be creating.
Thank you for your patience as we work hard at releasing that new version.
Should you be interested, we do have beta versions available.
Best regards,
Geoff B.