Do some items have hidden expiration dates?

[finite jay]

Support came back to be super fast on this question! For those curious, items that do not list an expiration date/validity period, do not expire.

[brisk cedar]

Just FYI, there have been instances of items being removed which were not originally planned to expire, and the other way around, so it can always happen, nothing to be afraid of tho, since they will always give us ample time with several announcements