I think this has kind of been done with the new account switching flow.
Perhaps something will be introduced to make it easier to figure out which account you’re in. I think having a small banner across the top in each tab which says the account’s picture & name on the left and the account’s sort code & account number on the right.
I’m pessimistic on anything meaningful for the masses. Monzo is going for niche advancements (business accounts/Monzo plus) which will make it money this year.
3.0 will probably just be the official launch of the new payments and account screens as well as the credit card link as @awjdean mentions above. I hope there will be something major like committed spending pots etc. but I doubt it.
It could be argued that simplifying the app and making it easier to use will lead to fewer support queries which will help Monzo reduce costs and thereby make more money.
I would absolutely love committed spending pots. It’s a feature that I can’t help but think has the groundwork already laid for it. Seeing how much money I can spend / save in my main balance would be lovely