Great questions! And yes how wonderful to see a new post on the most comprehensive GPN site in the universe.
All my opinions are just that... my opinions. (And maybe wishful thinking.)
Rebranding the product: No more "AND THE NOCTURNALS" the band mates are still there backing her live but now the  product is Grace Potter as in Taylor Swift. 
Wishful thinking maybe?
The lack of a press release or social media comment was confusing. Usually an artist is so excited about the new project they, their record company, their public relations people are gushing about it. This was not even like an afterthought but almost like 'lets hope nobody notices"

Cold hard truth? 
Probably going to Grace and Matt duo. 
Can't wait to see and hear what happens. But damn it is good to see some GP related chatter on the internets again!