Status: 1/24/2017 9:01 PST - The game is currently down for scheduled maintenance. it's right at the top of the forum page, c'mon
Scheduled maintenance does not necessarily mean that there will be a new client pushed. If no new client, or client files, then no you would not have to re-patch. It might just be a server-side maintenance patch and without patch notes, it makes it hard to guess until the maintenance is over.
like others have said and what i failed to imply.. did they push a new client that does not have patch notes or was this server side only maintenance. maintenance <> always = no new client.
there was recent patch notes for test server, I imagine all the things mentioned there were in this patch.. but you never know!