I would guess he won't be making the Atty anymore, probably to design something new instead of trying to improve his current one. Unfortunately for him newer designs with alternate build options and airflow patterns outperform his tried and true design. Plus I believe that if an atomizer stays on the market too long eventually everyone who wants one already has it. Authentic Tobhs used to be damn hard to find but now I see them in stock all over the place.
EDIT: Either that or he got tired of cloners ripping him off ...