Comment # 17 on bug 1155545 from Lukas Ocilka

(In reply to Fabian Vogt from comment #16)
> The (trivial) support for upgrades was added by
> https://build.opensuse.org/request/show/617833
> and made visible as desktop icon after openQA tests passed.

It says:

--- cut ---
This is just a proof of concept I wanted to register somewhere, even if it's in
a rejected SR.

...

Moreover, performing a system upgrade from the live image is something that
would need quite some testing that I have not done.
--- cut ---

Proof of concept --> best effort

There was no bugzila nr or FATE nr in that submission so I guess no request
existed.

Ancor, do you have some, PLS?

> No dropping should be necessary - the difference in environments should be
> neglegible, anything else is a bug in the environment.

The point is that we

1. Don't plan our new features (or bugfixes) having this in mind
2. We don't test it
3. We don't document it