I thought this was not occuring anymore. I might be wrong.
Most Latino events are posted here:
http://www.latinvip.com/calendar.shtml
All cool events tend to be announced here:
http://www.washingtoncitypaper.com/
Here are two events taking place this summer in Bmore/Towson:
June 25 EBLO Latino Fest, Baltimore
August 26 Latino Festival, Towson MD