Due to technical difficulties in restoring the original Dragon Ball Z series frame by frame, Funimation has announced that the release of the Level 2.1 disc has been put in indefinite hiatus and it won't be released in the indicated date, March 27."We are unable to continue these releases by way of this process.” FUNimation expects to research more practical and commercially viable means of remastering the Dragon Ball Z anime for future Blu-ray releases.
It's best for them to take their time.