The sole place to locate operating information is on a carrier's own website. Forget about press statements and other notices. These things change by the hour.
The broader issue is that there is absolutely no way to predict what schedule WN will perform in July. That likely won't occur until early to mid June. Flights which are scheduled may be cancelled and others may have their schedules change. This will likely continue until the Covid-19 situation becomes more clear, both at the origin and arrival points (especially where one or the other is not the US).
For people who like to plan ahead, these may be tough times. But, it isn't likely to change soon.