Add a note about the linux-gnu bump

Author: cuviper

posts/2022-04-07-Rust-1.60.0.md

@@ -187,6 +187,10 @@ There are other changes in the Rust 1.60.0 release. Check out what changed in
 [Cargo](https://github.com/rust-lang/cargo/blob/master/CHANGELOG.md#cargo-160-2022-04-07),
 and [Clippy](https://github.com/rust-lang/rust-clippy/blob/master/CHANGELOG.md#rust-160).
 
+In a future release we're planning to increase the baseline requirements for
+the Linux kernel to version 3.2, and for glibc to version 2.17. We'd love
+your feedback in [rust#95026](https://github.com/rust-lang/rust/pull/95026).
+
 ### Contributors to 1.60.0
 
 Many people came together to create Rust 1.60.0.