In general it should be save to update as long as you use the stable, i.e. default, repository. Every now and again there are things that need user attention, e.g. the Godot engine update a while back, but mostly those things only concern a subset of users, who would notice the change anyway. The repository switch back in the day was also announced on social media and the website, but if I recall correctly it required no intervention on the part of the user. Updates will be held back if there are problems or more testing is needed (as is the case right now with the GNOME stack update, hence no updates last Friday)
Of course it can't hurt to check the website/forum/IRC from time to time to get informed about recent and upcoming changes, but I don't think it's strictly necessary for the average user.