Thank you guys!
Also because this new card says it expires this year, I’m not sure how long it’s valid for.
I think it’s 5 years, but I’m not entirely sure.
ILR is indefinite... as long as you continue to live in the UK, it never expires.
The BRP cards themselves used to be valid for 10 years, and had to be renewed with updated biometrics every 10 years (like UK driving licences) - unless of course you apply for UK citizenship before that - but as everything is moving online next year, this won't apply anymore as there will be no card to renew.
Though, you might need to submit updated biometrics to the online system in the future - we don't know how it will work yet.
Also where do you check for the digital info of your brp card?
We don't know yet.
The digital system isn't being implemented until Jan 1st 2025, and UKVI have not yet announced how it will work (even though they said they would publish information about it in early 2024)... so all you need to know at this stage is that your BRP will expire in December 2024 and that you will be able to check your status online after that.