Here on Discogs a lot of releases (at least in the first page and a few more in the second and third page too) are listed as CDr.
Most of them seem to be released between 2005 and 2007 but there are other examples also in most recent years.
The highest release listed there as made in 2015 is listed as a CDr too
But probably there are much more which were not specified by the submitters, for various reasons.
The user "hairmetalheaven" is the guy who listed all the cdr version. So I presume the other releases listed as silver printed CD by hairmetalheaven are with great chance "real" silver printed/factory pressed CD.
All the other submissions made by different submitter than hairmetalheaven are - of course - dubious as I've seen a lot of pro CDr on Discogs aren't listed for what they really are, probably for mistake, ignorance or simply for convenience.