70 episodes / 4 (not 3, thank god!) eps per disc 
= 18 discs over the next few years... not that 
bad, really. As far as I know, there isn't a 
boxset planned (the release schedule and format, 
aside from the two different versions, seems to 
be much more in line with the way things like SM 
and Pokemon have been released).

Cheers,

SP