Last night, Sony released System Update 1.72 for the PlayStation 4. A tweet was sent out around 9:00pm alerting their followers of the pending update. As of this morning, System Update 4.60 is rolling out to PlayStation 3 customers.
As noted in the tweet, these updates will improve stability issues for both consoles. No further word has been given if any major features have been included in this update.
System software updates coming soon for PS4 (v1.72) and PS3 (v4.60), both will improve system software stability during use of some features
— PlayStation (@PlayStation) June 24, 2014