Trailer for Xelzaz's Sirenroot Patch can be found here:

https://www.youtube.com/watch?v=CQV9VjrMOXA

I've been following the news on this particular patch for a while now on the official Xelzaz Discord server, so I'm pretty excited to see that it's finally come out! From a couple of the comments that Xelzaz's author BluePwnsU made during development, it seems like there was some specific coding implemented to make sure that Xelzaz doesn't fall behind while you complete all the parkour puzzles that Sirenroot uses, as well as some other more specific things implemented for more spoilery, plot-related purposes. All in all, it apparently came out to around 160 lines of dialog in total, which is quite a lot for one quest!

Sirenroot is already a quest mod with a lot of hype behind it, so Xelzaz getting a patch for it is going to add yet another layer to the experience.