So, the new SpotPass item being given out is the Uncle Sam Outfit:
It comes in Red, Yellow, and Fuchsia. If it’s following the same pattern as the last items, it should be around until the 15th of the month. It costs $100.
And remember, since it’s the first of the month there is a new monthly interior in the Interior Shop–Ice (ironically enough). Since June started Summer, I would expect September to start Fall and that will be the next time all the “Seasonal” tabs update.
Note: I received the game early from Nintendo. Thank you, Nintendo! :D If you are interested in Tomodachi Life, you may want to look into picking it up!