[gnome-bluetooth/wip/hadess/default-adapter-work: 9/10] README: Mention new default adapter algorithm

[Bastien Nocera <hadess src gnome org>]

commit 9b3ff93a307a88a0fef67f3a9828b0d852ac54b8
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Jan 5 16:36:50 2022 +0100

    README: Mention new default adapter algorithm

 README.md | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/README.md b/README.md
index 715c5ad1..47945c42 100644
--- a/README.md
+++ b/README.md
@@ -18,9 +18,13 @@ multiple Bluetooth adapters. Earlier versions of the bluez backend software
 had support for setting a "default adapter" but that is not the case
 any more.
 
-As the goal is usually to disable an internal Bluetooth adapter in favour of
-a more featureful removable one, there are a couple of possibilities
-to do this, depending on the hardware:
+Since GNOME 42, the default adapter is the "highest numbered" one, so
+removable/external Bluetooth adapters are likely going to be preferred
+to internal ones.
+
+As the goal for multiple adapters usually is to disable an internal
+Bluetooth adapter in favour of a more featureful removable one, there are
+a couple of possibilities to do this, depending on the hardware:
 
 - Disable the internal Bluetooth adapter in the system's BIOS or firmware