Comment # 29 on bug 905034 from Johannes Meixner

I will not generally (i.e. for all openSUSE users) upgrade
to a sane-backends development version because when a
development version has an issue fixed there could be
regressions in other places and I will not risk that
other new issues may appear for other users where the
currently released sane-backends version "just works".

A version upgrade for all openSUSE users will happen when
sane-backends upstream has released the next version.

FYI:
Even with the newest sane-backends development version
there are still USB related issues (specifically USB3)
reported on the sane-devel@lists.alioth.debian.org upstream
mailing list which shows that the whole USB stuff is not yet
fully solved (e.g. see the "Canon LIDE 110 + USB3" mail thread
which is also about the genesys driver).
As far as I understand it (but I am not at all a USB expert)
it seems the root cause of the USB issues is something in the
kernel and current sane-backends development version has only
some kind of workaround implemented. Probably the real solution
would be to have it solved in the kernel.