Yep, if we assume 500 people will enter the pool between last wednesday and this wednesday (considering a B2B) in the 470-600+ range, and around 1200 people will enter the same range between Next Wednesday and July 29th, than there's a real chance of around 1000-1500 people below 471 receiving ITAs on the last draw of July. That would be enough for, I believe, at least 468+ candidates.
But of course, it all depends on wether the influx of candidates continue to be below (or around) 1000 candidates/fortnightly, and IRCC continues to invite 3900 candidates in each round. If the influx starts to ramp up to January/February levels, then I really believe 475+ will be the new normal.