[viccuad]

  Debian Unstable     -> Testing       -> Stable -> Oldstable -> Oldstable with LTS
  Fedora              -> Centos Stream -> RHEL   -> RHEL with LTS
  Opensuse Tumbleweed -> Leap          -> SLES   -> SLES with LTS

Debian supports upgrades with major versions, and doesn't bump package major versions between minor versions. SLE/Leap don't support upgrades between major versions, and bump package major versions between minor versions.

[pferde]

It is untrue that SLES does not support upgrades between major versions: https://documentation.suse.com/sles/15-SP2/single-html/SLES-...

It is, however, true that SLES is less conservative than e.g. RHEL when it comes to bumping software versions between their minor releases (service packs). I remember that they switched from 2.6 to 3.0 kernels sometimes in SLES10 days. Fun stuff.

[pelasaco]

openSUSE however doesn't support it https://en.opensuse.org/SDB:System_upgrade#Supported_scenari...

[pferde]

The link you posted only states that the upgrade is not supported for 64-bit ARM, and that 32-bit (x86) system cannot be upgraded to Leap. It doesn't say upgrade in general is not.

[merb]

tumbleweed does or rather, tumbleweed does not have point releases. in my eyes tumbleweed is way better for cloud, IoT and desktops, as soon as you use transactional-update

P.S. I'm fallen in love with it.

[rombert]

Note that the gap between Leap and SLE will become quite small after Leap 15.3, with binary packages for SLE being reused for Leap.

It's interesting that while RH/IBM are moving away from the 'community rebuild' model SUSE are moving close.

https://en.opensuse.org/Portal:Leap/FAQ/ClosingTheLeapGap

[pelasaco]

> Opensuse Tumbleweed -> Leap -> SLES -> SLES with LTS

Almost right :)

Leap is the fixed point release, based on SLE. SLE is rebased on Tumbleweed every 3-4 years.

[viccuad]

Well, my intent was to roughly chart the supported timeframe and expectations of each, not the flow of code through them. That SLE gets rebased from Tumbleweed directly every 3-4 years justs showcases my second point from before: SLE bumps major versions of packages between minor SLE versions.