Special items only on 7th day?

yes, I caught an Upgrade yestesday, just need more porygon candies.

Yes you can, but is low chance now from what it seems, i bet they realized the community realized how the system was working about giving you the item the same hour the next day so they said ''no this is a no, we wont let you farm it hard, so we are going back like it was in launch''

Yes, I got two last night within minutes of each other, which surprised me because I had only received four in all the weeks since they began appearing.

Yes, you can get them from normal pokestop spin, and you can even get 2 from 7th day streak

Yeah. I've got my first spec. item today - Metal Coat

Picked up a Dragon Scale today (Sunday is my 7th day)

Has it been confirmed that the first spin on a 7-day streak always gives a special item? I could have sworn that I didn't get one on that spin last week.

Had a very lucky day and picked up a second King's Rock and a third Upgrade. Have three Porygon 2 now :)