I’m sorry if this has been covered somewhere, I can’t seem to find it (unless I’m missing something).
Is there anyway, besides a full re-install, to update haiku, or parts of haiku? something like Windows Update (though better implemented). I know Package Management is being worked on, but will that cover the system as well as apps?
Yes, all of this will be handled by package management, and this is why it is so important for R1. We want users of R1 to be able to update their systems. There are many blog-posts on package management to read for the interested.