Trample is affected by Daze. The way Daze is written, all attacks are affected by it unless otherwise specified, and Trample doesn't say anything to contradict this.
The last Codex update came out before Lost Grimoire and says specifically that it's only up to date through to Paladin vs Siren. Meanwhile, the Supplement doesn't generally contain new terms. It's the place to clarify how things work, not necessarily to introduce new things. Notice that it also doesn't include terms like Snatch. Also, despite what it says, it is only up to date through Paladin vs Siren as well. I'm not completely certain why they put that it was good through Lost Grimoire on there, I guess because Lost Griomoire came out in the middle of writing the Supplement update, but nothing from Lost Grimoire has actually been included. Another update is in the works.
