what to do with .rpmnew's?

[Claude Jones]

*** warning: /etc/rndc.key created as /etc/rndc.key.rpmnew
*** warning: /etc/selinux/targeted/contexts/files/file_contexts.homedirs saved 
as /etc/selinux/targeted/contexts/files/file_contexts.homedirs.rpmsave

Running updates today, and got the above warnings. What's the proper reaction? 
These are configuration files that are being replaced for some reason, but 
the old are being renamed and kept in case there's something needed in one of 
them? Do I have this right? 
-- 
Claude Jones
Bluemont, VA, USA