I really believe they want to lock up the market before they boast about its lucrative nature, and also because they only purchased $2.5 million shares back and want to get it cheap, then they'll let us know what's up ;) Pachter from Wedbush said ZNGA will snap right back up in the morning.
What exactly did you want them to say? They've always stated that the UK launch is a trial to get out the kinks and see what works and what doesn't before they initiate a more expansive launch. Don't forget it was only launched 3 weeks ago so I doubt they've been able to assess anything as of yet. The Q2 conference call is when they'll be able to shed more light on the subject.