Speaking as a former event organizer, I do not find threads and/or posts asking about and confirming the existence of future events to be a problem for the current event. People want to know what the future brings and letting them know that something is going to happen and telling them where it is going to be is perfectly reasonable.
That said, continuous posts about what activities are planned, how things are going to work, and how great it is going to be, do detract from the current event and should be avoided by the future event planners as a courtesy to the current event team.
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked