robot

this thread has to do with the many artist manga called robot. having just been at anime north i came across the masterpieces; 4 volumes to be exact. only got two so its bugging me, and whats even worse is i hear its being discontinued for some time in english! stinks =( but regardless, unless they plan on finishing half way through it will go on eventually. my question relevant to this problem is; does anyone know exactly how many volumes there are? forgeting those printed in english, i mean the ones in japanese. i have seen volume 10 so far, so would anyone happen to know if thats the final one? itd be greatly appreciated. this is the cover for one just to make sure no ones confused:



thanks again, hope to hear from someone soon!