From GuildWars site:

This week marks the third anniversary of the original Guild Wars (Prophecies™) launch! To celebrate this epic milestone in the Guild Wars universe, and to say thank you for your continued support, we’re thrilled to announce the forthcoming Guild Wars 3 Year Anniversary Competition!

Our competition goes live on the 29th of April so check back then to see the fantastic prizes we’ve got in store, and to enter the competition itself!

LINK