No, and there are rarely, if ever, such announcements before a new casino debuts. Players almost always have to wait for a new casino's doors to open to see what the gambling opportunities are. Usually, few surprises await. Strip casinos are usually tighter than others, while some locals casinos are looser than others.
One shocker surrounded the opening of the Reserve in southeast Henderson (now Fiesta Henderson) in 1997, which debuted with the most full-pay and positive video poker machines, even at the higher ($5) denominations, than any casino in recent memory. The Venetian, likewise, surprised knowledgeable observers when it opened with more good VP than expected. Still, there was little forewarning about these two casinos; the news only spread after players could walk the floors and see exactly what was there (and both casinos tightened up considerably not long after their grand openings).
Wynn Las Vegas is expected to typify the route followed by the major megaresorts, such as Bellagio, Mandalay Bay, Paris, and Aladdin, none of which offered much playable VP upon opening (or thereafter, for that matter).