No Man's Sky won't require Playstation Plus.

The highly anticipated No Man’s Sky is almost launching – 9th August, and many gamers are looking forward to get their hands on this title.  Hello Games has said the following statement to Game Informer

PS Plus won’t be a requirement to play online, however you will need to connected to the internet for your discoveries to register with the universal atlas.

This makes sense for the fact this game features infinitely generated planets making player’s interaction near impossible.