I heard the rumor quite some months ago but it was mostly speculation, altough it made sense after they acquired Edge Impulse.
I'm not sure whether to be happy or not to be fair. Main issues with Arduino while I was there was the leadership lack of vision and the unwillingness to support projects coming from the engineers. It was a company kinda coasting and unsure where to go.
If they replace leadership with people that have an clear vision and focus this might be good.
My greatest hope is that people with stocks don't get screwed over though, they used to distribute them quite "easily" at a certain point to avoid raising salaries.