VMworld EMEA, IPExpo, The ExecEvent, Citrix Synergy, oh my!

This month (October 2011) there are a slew of conferences on virtualization and cloud technologies being held in Europe. The question becomes which to attend! If you are in the United States, this could be expensive considering the current Euro to Dollar exchange rate but if you are already in Europe one of these events is well worth attending, each has there own take and focus. But after the success of VMworld US, is there anything more to announce?