We've decided not to use Debian 11 (Bullseye) at all, as it has too short a
life and no real stability benefits.  Our new plan is to eventually demote
TLXOS 5.2.x to LTS status, possibly using the skipped 5.1.x version numbers if
the LTS variant ends up differing significantly from 5.2.x.  Bookworm will very
soon be replaced by Trixie, so we will release a new progressive version of
TLXOS based on this (5.3.x?) using a 6.12 kernel (the latest "longterm"
baseline), and use lessons learnt in 5.2.x to establish a new LTS release,
replacing 5.0.x (Bookworm).

This means that 32-bit is pretty much dead (but see below regarding TLXOS RPi),
such that 5.2.x LTS will not support 64-bit incapable devices at all.  That
means no 32-bit-only x86 devices (its very unlikely that you would own one of
these!) or Raspberry Pi v2 and earlier (including the original Pi Zero, but not
the Pi Zero 2).

VMware/Broadcom/Omnissa Horizon Client has become a huge problem for us of
late, since Omnissa (the new owner of the Horizon product line) shows no
interest in the Raspberry Pi v5 or 64-bit ARM platforms, and their disinterest
has prevented us from replacing TLXOS RPi's userspace with a fully 64-bit one.
Worse yet, no-one is testing a 32-bit userspace under a 64-bit kernel anymore,
and a great many bugs have reared their ugly heads, in a scenario that no-one
much cares about or is willing to fix (because "everyone should be using
ARM64").

A secondary problem is that the compression system that TLXOS <= 5.0.x used -
Reiser4 - is not available for kernels >= 6.1, due to the mainline kernel
dropping ReiserFS in general, and subsequent loss of ReiserFS developer
interest.  Personally, I liked Reiser4, and thought that it gave TLXOS a great
deal more robustness with regard to inevitable root filesystem enlargement, and
I'm sorry to see it go.  I tried to port Reiser4 to the 6.1 kernel myself, but
wasn't successful.

The bottom line is that while TLXOS 5.0.x may have worked well, you can't rely
on it anymore, because Debian have discontinued security updates for it.
You're going to have to upgrade to TLXOS >= 5.1.x soon - sorry.  This means
that particularly old hardware (e.g. the Pi Zero) will no longer be supported.

FYI ifupdown (i.e. ifup and ifdown utilities using /etc/network/interfaces) is
also showing its age.  This means of configuring the network has become
dangerously vulnerable to deadlock due to reliance upon race-condition-prone
userspace scripts.  We had difficulty working around this in TLXOS 5.0.3/5.2.3,
and in future releases we will need to abandon this means of network
configuration in favour of systemd-networkd and related systemd services.