When I try to open discord it just says there's an update available which apparently is required and not in the repos
Please next time look around on the forum for similar topics.
The Manjaro developers will add the new release of Discord to the Stable repository when they deem it reliable enough. In general and with the exception of security-related issues, Manjaro is always a few weeks behind Arch because things are tested more thoroughly in Manjaro than they are in Arch.
I did search but i didn't find anything
So the actual solution for now is to use the Flatpak version
flatpak install flathub com.discordapp.Discord
I don't even remember what version of Discord I installed, will have to check tonight. I rarely use Discord.
Just download the tar.gz file, unpack and copy to
sudo tar xf discord-0.0.10.tar.gz -C /opt/discord
It looks like the team is aware of the issue and is currently looking at it, so those who can afford to wait a short while for an official remedy shouldn't be waiting too long. See [Non-Manjaro packages which have been flagged as needing an update]. It's being discussed and worked on. No eta yet, but personally I wouldn't expect to wait too long.