i was told that too at one point, also 22nd may and 28th may lol!
think its safe to say that tomorrow should be right, as thats what they told me when i called last week (and when i went to the
travel agent last friday and they called) and i also phoned from work this morning and they confirmed as far as they know on sale tomorrow. (ps i am not sad for checking lol, its just i am due to go on holiday the end of this week for 2 and a bit weeks and the person i am going away with is on hols for 2 weeks after, so if we dont sort it out this week, we wont be able to until after both our hols)
now am just wondering if they will extend the 40% off sale into the new booking period or something like 4 nights for 3 etc