The movement to subdivide Division III or create a Division IV was halted after Division III members' survey responses reflected a lack of interest, according to an article in the NCAA News.
Division III's anticipated growth, projected to be to 480 overall members by 2020, prompted a small group of Division III institutions to call for breaking the division in two. However, the movement apparently failed to draw enough interest.
The full survey results will be announced April 9. However, the preliminary results were, according to the NCAA News piece, "consistent with the level of opposition that was expressed during an NCAA Convention discussion of the working group's proposal."
Division III went through a reform process at the 2004 NCAA Convention which eliminated the so-called routine redshirt, aimed at bringing the increasingly diverse population of D-III schools closer together.
A new division or subgrouping would have needed 150 overall members in order to be viable, according to the NCAA's initial research.