[PADR] Weekend Dungeon will be removed from Redeemable/Exchangeable Dungeons
After 2 hour maintenance (PADR-only) on 11/15 (Fri) 2:00pm - 11/15 (Fri) 4:00pm JST
Sources GungHo JP Notice
You know how you can exchange orbs for dungeons? With the Weekend Dungeon change that happens starting 11/16 (to become Sat/Sun dungeons), exchange for the original Weekend dungeon will be removed after this maintenance.
No mention of the newer dungeons being added to the list though.