The Houston Dynamo's stadium is expected to break ground in October, with a projected opening by April of 2012, before the season starts. Just gotta love the location next to Downtown, the only soccer stadium so close to a city's downtown. In the Dynamo's case, literally next door. I don't know why people keep building their stadiums in the suburbs.
anyway, renderings of the new Grêmio Arena stadium, for 52.500 people (all seater, for official FIFA matches) or 58.000 people (with part of the seats being one of the goals removed, because fans like terraces).
construction set to start in July 2010 and end in December 2012