Jagex is launching the Botany Bay/Bot Watch update at the same time, and Botany Bay is in-game content, so it's blatantly obvious that Jagex would make an announcement when that is released. The Bot Nuke is supposed to be done at, or near the same time as the Botany Bay update. This means that if you do not see an update about Botany Bay on RS homepage, then the Bot Nuke has for sure not been released. Don't expect the Nuke until after you've seen Botany Bay on the RS homepage.