dev-perl/Text-Quoted-2.60.0 installs Text::Quoted v2.06. 2.60.0 looks like a typo - note the '60' vs '06'. (I have an overlay containing Text-Quoted-2.08 and noticed that perl was still using Text::Quoted v2.06).
No, it is correct. We convert CPAN number scheme to gentoo specific number scheme. Due to development problem. See perl herd guide for more info. Moreover this ebuild contains 'MODULE_VERSION=2.06' So, it must be correct.