I believe should be February 2020 not 2010
--- a/doc/manual/R-exts.texi
+++ b/doc/manual/R-exts.texi
@@ -2631,9 +2631,9 @@ not necessarily installed) on all known @R{}
platforms. As from @R{}
4.0.0 a C++ compiler will be selected only if it conforms to the 2011
standard (`C++11'). A minor update@footnote{The changes are linked from
@uref{https://isocpp.org/@/std/@/standing-documents/@/sd-6-sg10-feature-test-recommendations}.}
-(`C++14') was published in December 2014. The latest standard (`C++17')
-was published in December 2017, and a further revision (`C++20') is in
-preparation.
+(`C++14') was published in December 2014. A revision (`C++17') was
+published in December 2017, and a further revision (`C++20', with many
+new features) is scheduled for February 2010.
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