This is awesome news! Thanks for the fast response!

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________________________________
From: Jonathan Wakely <jwakely@redhat.com>
Sent: Wednesday, October 26, 2022 12:26:13 PM
To: Paul Deitel <paul@deitel.com>
Cc: libstdc++@gcc.gnu.org <libstdc++@gcc.gnu.org>
Subject: Re: Support for C++20 <format> header?

On Wed, 26 Oct 2022 at 17:25, Jonathan Wakely wrote:
>
> On Wed, 26 Oct 2022 at 17:20, Paul Deitel <paul@deitel.com> wrote:
> >
> > Hi Everyone,
> >
> > Just curious when (or if) we will see the C++20 <format> header included in the library.
>
>
> It should land on trunk next week.

Meaning GCC 13 will include it.