Well, we (as developers of the Deck Android app) had similar issues while trying to adapt the logic.
Starting with Deck 1.5 cards will appear in the upcoming view if one of the following two cases matches:
- Card has a due date AND card is in a not shared board
- Card is in a board which is also shared with others AND (card is assigned to you OR (card has a due date AND nobody is assigned to the card))
I hope this is readable (pay attention to the brackets, the second case is a bit more complex). Also see the upcoming analyzer tool i wrote to help explain why cards are or are not visible in the Upcoming Cards view.
cc @juliushaertl as maintainer of the Deck server app who can confirm / explain / correct this logic.
Is there a way to configure the filter for upcoming cards?
Can new cards made by me be automatically be addressed to me?
Not yet, but i am also not aware of an existing issue about this question. I propose you create a new feature request for this.