diff --git a/book/en/src/by-example/app.md b/book/en/src/by-example/app.md
index 02c49b1525..ebb71f1be0 100644
--- a/book/en/src/by-example/app.md
+++ b/book/en/src/by-example/app.md
@@ -10,8 +10,8 @@ All RTFM applications use the [`app`] attribute (`#[app(..)]`). This attribute
 must be applied to a `const` item that contains items. The `app` attribute has
 a mandatory `device` argument that takes a *path* as a value. This path must
 point to a *peripheral access crate* (PAC) generated using [`svd2rust`]
-**v0.14.x**. The `app` attribute will expand into a suitable entry point so it's
-not required to use the [`cortex_m_rt::entry`] attribute.
+**v0.14.x** or newer. The `app` attribute will expand into a suitable entry
+point so it's not required to use the [`cortex_m_rt::entry`] attribute.
 
 [`app`]: ../../api/cortex_m_rtfm_macros/attr.app.html
 [`svd2rust`]: https://crates.io/crates/svd2rust
diff --git a/macros/src/lib.rs b/macros/src/lib.rs
index 6675765b80..fdde5c6933 100644
--- a/macros/src/lib.rs
+++ b/macros/src/lib.rs
@@ -22,11 +22,11 @@ mod tests;
 /// The `app` attribute has one mandatory argument:
 ///
 /// - `device = <path>`. The path must point to a device crate generated using [`svd2rust`]
-/// **v0.14.x**.
+/// **v0.14.x** or newer.
 ///
 /// [`svd2rust`]: https://crates.io/crates/svd2rust
 ///
-/// and several optional arguments:
+/// and a few optional arguments:
 ///
 /// - `peripherals = <bool>`. Indicates whether the runtime takes the device peripherals and makes
 /// them available to the `init` context.
diff --git a/src/lib.rs b/src/lib.rs
index d78a1e1e61..502cbc6a2c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -31,7 +31,10 @@
 //!
 //! # Cargo features
 //!
-//! - `heterogeneous`. This opt-in feature enables the *experimental* heterogeneous multi-core support.
+//! - `heterogeneous`. This opt-in feature enables the *experimental* heterogeneous multi-core
+//! support. This feature depends on unstable feature and requires the use of the nightly channel.
+//!
+//! - `homogeneous`. This opt-in feature enables the *experimental* homogeneous multi-core support.
 
 #![deny(missing_docs)]
 #![deny(rust_2018_compatibility)]