On July 10, 2014 the first version of this new functionality was released to all sites. Currently it is available for all games or practices that are submitted using the Add New... functionality withing the Scheduling Module. We will be awaiting feedback from schedulers on how that works, and also will want to hear whether or not doing an update (instead of an insert) would also require a warning before submitting; and also if importing needs to have a warning.
We'll leave this idea as "in progress" for now.