No, it's still down. Tried from 3 different computers at two different houses across town from each other.
EDIT: *insert (mild) swearing at Mojang here* Correction, if you have auto-update turned on, it shows up as 'cannot ping/server does not exist'. Reset to 1.6.4 and it instantly shows up. Mojang changed that it looks like, so that any/all older builds will not show up at all.