We are assured this weekly patch is not an April Fool's prank.

The US servers will come down on April 1st, 2014 at 7:00 AM Pacific Time for an update. The expected downtime is approximately one hour. EU servers will come down beginning at 9:00 PM PT (6:00 AM CET April 2nd, 2014) for the same update. Downtime is anticipated to be approximately two hours.

The update notes are below.

POPULATION / ZONE PROGRESSION
Temple of Veeshan: Guardian's Edifice

• Klandicar should no longer cast Chaos Bolt more than intended.

Temple of Veeshan: Halls of the Betrayer

• Corrected an issue that would sometimes cause the doors behind Grendish to not open when they should.

PvP

• Converting a mount to a house item must be done within a house on PvP servers.