Since the weird menu makeover I’ve been getting something called Queue, which I’ve never seen before.
Do I need to take action or do those posts get posted automatically if I ignore them?
AI-generated summary
The term “Queue” in the discussion refers to posts pending approval in the Review Queue. rlauriston initially inquired about the meaning of Queue, which was unclear to them after a recent menu makeover. JammyDodger suggested it might be related to the Review Queue, where posts need to be approved before they appear on the site. ClawdiaWolf confirmed this and added that the handling of queued posts depends on the auto handle queued age setting. If set to 0, queued posts remain in the queue until handled; otherwise, they get rejected automatically after a certain number of days.
I’m not sure. 
The only thing that sounds like is the Review Queue, but that wouldn’t be a new thing. If posts go to /review for approval you would need to approve them for them to make it onto the site.
Do you have a screenshot you can share? (here or in a PM)
Queue is what the notifications show for posts pending approval in the Review Queue. I see it a lot on my instance where we lock users to TL0 to force mod approval of their posts before using silences/suspensions.
Depending on the value of the auto handle queued age setting they either remain in the queue until handled (set to 0) or they get rejected automatically > 0.
That setting also affects other flag types as the description mentions:
Automatically handle records that are waiting to be reviewed after this many days. Flags will be ignored. Queued posts and users will be rejected. Set to 0 to disable this feature.