I notice recently that the right side of pages (both the main page and question pages) shows a list of tags and recent badges instead of a list of Hot Network Questions that usually appears. The hot questions list can still be accessed via its usual webpage.
I also noticed this uber Meta post saying there would be scheduled maintenance that seems to be going on at the moment.
Question 1a) Is everyone missing the HNQs? (A browsing of the Hot-Questions tag at uber Meta didn't reveal anything relevant)
Question 1b) If so, is this maintenance-related?
EDIT: Two hours later, they're back.