Time Trial / Time Trialling / TT

I wonder if we will start seeing more riders giving up the non round chainrings:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3990898/

Key points
During the incremental exercise test, no significant differences were found in power output, oxygen consumption or heart rate between oval “Q-rings” and conventional chainrings.
Over the course of the incremental test, blood lactate levels were comparable for the oval “Q-rings” and conventional chainrings.
During the short sprints performed after the incremental test, there were no statistical differences in power production between oval “Q-rings” and conventional chainrings.