This is a cumulative probability market - all the answers that apply will resolve according to whether their conditions were met, individually.
This will not resolve on an announcement, the release date must pass and units must be in consumers' hands to resolve YES.
If date windows pass without a release, they will resolve NO.
1,000@BlackCrusade "PS6" would probably be fine. "Playstation NEXT" is also probably fine, assuming it otherwise has all of the characteristics that we would expect from a Playstation 6.
If they break the naming convention then resolution has the potential to get messier, but hopefully this won't be too difficult to resolve. If edge cases crop up I'll talk about it at the time. In general I'd expect anything that goes into a "Tenth generation of video game consoles" page on wikipedia made by Sony to count.