For weeks, the world's been talking about severe Intel design flaws
affecting many CPUs and forcing operating systems to look for sometimes
Linux patches for these issues are in a state of ongoing development.
Security is always the first priority, at the expense of any other
feature. Next would probably be the general speed of a running system for
the average user. After that, the developers might begin piecing together
any features that had been pulled as part of the initial security fix.