DBZ Volume 6 (covering tankōbon 32-34) in the “Viz Big” omnibus, 3-in-1 line was originally listed for a 19 January 2010 release date. Following the trend of prior releases, it was later delayed to 16 February 2010.
Our forum buddy xzero let us know that Amazon and other retailers now have it listed for 09 March 2010. The “Viz Big” volumes have lately been notorious for three or four delays, sometimes pushing them up to half a year late.
Volume 7 is now listed for 20 April 2010 with Volume 8 following on 20 July 2010. It is likely these dates will continue to slip.