Hi there,
So once I saw the AI picture, I kinda stopped listening 
No date certain on either product the debugger is Very Early in the cycle but the Xiao I think is weeks away or sooner. I still can’t believe my eyes… 
It is truly amazing what they can manage to do. 
probably firming up the dev path as there isn’t any arduino support AFAIK so it will be interesting 
Say what you want is what I tell others, they are pushing the bar ALWAYS more than a lot of companies in the space just slapping more i/o or a bit more flash with not a lot of efficiency thought going in. This Nrf54L Platform gives it up Like Someone owing you rent money.
it’s been long overdue IMHO. 
HTH
GL 
PJ 