So Blizzard made a post confirmed that s6 would finished on 29th May (or 30th May AM for us EU legends):
Blizzard
Wrath of the Lich King Classic Season 6 Ends May 29
The second Wrath Classic PvP season will end at 10:00 p.m. PDT (1:00 a.m. EDT) on May 29.
“During maintenance on May 30, Arena Point costs for Season 6 gear will be reduced, and rating requirements will be removed for most items, though will still be required for elite weapons. During the offseason, all ranked Arena play will be unavailable. Once Arena Season 7 begins, Arena Points will be converted to Honor.”
HOWEVER…the season is still live as of now? What’s going on?
Usually, separate announcements are made on the US and EU forums; and the season in the EU region ends one day after the season ends in the US. This time Blizzard only made announcement on the US forum. I’d wager they simply forgot to made an announcement on the EU forum.