The main annnouncement re the simple structure chip was Dec 2018...

The main annnouncement re the simple structure chip was Dec 2018 and it was then mentioned again at last years AGM where Yuval said it was going to require further study and development which at the time I thought was code for "this is turning out to be more complicated than we thought, don't hold your breath". They then went quiet on the simple structure chip and I thought perhaps they had dropped it.
Danny said at this years AGM with the time they had on their hands due to the virus they were going through their "inventory" looking for new ideas and they took another look at the simple structure chip and they got it to work hence the demo.
I recall him saying it was exciting due to ease of manufacturing and cost savings which was a repeat of what they said back in Dec 2018 and he also said they are still developing the full structure chip.
It's not great we only hear about this in passing from Danny and not from Fred or Yuval in a proper announcement or update.