From ArchWiki

Has this been "replaced" by pm-utils?

No, in no way. s2ram is more actively maintained than pm-utils and offers a much wider range of tricks for problematic cases. Actually s2ram is also newer. Morever pm-utils is properly a collection of scripts to suspend to disk and to ram, and it relies (blindly and silently) on the different core methods. So it should not be compared to the userspace core methods provided in uswsusp, but at most with the hibernate-script (which also allows you to use the different core methods, but lets you decide which one). However it does not replace even the hibernate-script, because both are slowly developed. == patroclo7