Do review items in the First questions and First answers queues age out of the queues?
I tried finding this info in What are the guidelines for reviewing? but it doesn't say. Neither could I find the info in What are the review queues, and how do they work? It also doesn't say in the Help Center How do I use the First questions queue? or in How do I use the First answers queue?
The reason I'm asking is because because on SO after 13 days of the new First questions queue there were 25k reviews, but there are 9.5k pending reviews. Meaning at this rate there would be 266k pending reviews within one year.
EDIT: Random Person shared an older post in the comments When is a review task "completed" or "invalidated"? that lists some rules that predated present Review Queue redesign.