The work will take place between 4pm GMT (8am PST) and 11pm GMT (3pm PST).
While no disruption should occur for those playing online, it is noted that intermittent periods could occur for a small subset of users.
PlayStation Vita was given its third update in ten days this month, adding stability to some titles.
Sony will announce a new PlayStation exclusive this week, which is rumoured to be Super Smash Bros.-style fighter PlayStation All-Stars Battle Royale.
Watch the PlayStation 'Michael - Long Live Play' advert below: