Are there ever new items added to these shops mid-event? I have a list of items I want to buy that I'm working my way through, and I'm wondering if I'll have to revise this later, if there will all of a sudden be additional items that I'll want to make sure to note so I don't miss them.

said in the start of Survival news post that there won't be c:

Lovely, thanks so much !

No problem!