I am on eastern australian time and servers did go down roughly 10-11pm eastern australian time Australia Canberra/Sydney ESTAA
i am posting this at 0327 27-jan-2016 so they did infact do what you said took it down late at night and pout it back up early morning ive just logged in to see if it is up and i can play now if i want so it is up.
the one thing i do hate though about swtor although it didnt happen this time surpriseingly after every update or maintence i get to play but only on starter planets until download completes,many of my alts have been made because of there maintences because i had to wait for download to complete surpriseingly todau i can play my lv 34 and not have to wait or make a new character yippee,finally a good update brower/download wise