It would be good to hear an official answer once the weekend is over. In the meantime, I'm making do with my own observations of the rate at which workunits are appearing. From those, the average rate over the past 20 days does indeed imply a mid-August finish to new workunits. However, that is ignoring unpredictable factors such as whether later workunits might compute with more or less effort, or how the number/power of DSFL crunchers might change in those remaining months (think of the possible effects of the HPF2 project ending soon, versus the opposite effect of crunchers achieving a target badge and moving elsewhere).
Good luck with whatever your own target is!