Looks like Biden is going to announce a 2nd run!
https://www.politico.com/news/joe-biden
Next week apparently.
Given the polls that show Democrats would prefer a different candidate, it's fertile ground for a challenger to contest the nomination. That hasn't happened in my lifetime. Apparently it was common, back in the day.
And here I was thinking he would step aside for Kamala. Perhaps the polling for her is so bad that they (the powers that be) want him to be on the ticket.