questions re: package qemu-system-sparc

[email436 at nym.hush.com]

[Emailing here because it's the published maintainer address for
Ubuntu package qemu-system-sparc.  Please redirect me if I should look
elsewhere.]
>From what I've been able to find within Ubuntu 18.10, the latest
available version of qemu-system-sparc (and qemu in general) is 2.12.0
(Debian 1:2.12+dfsg-3ubuntu8.6).
However the upstream QEMU project released v3.0.0 on August 14 2018,
thus I'd hoped it would make it into Ubuntu 18.10.  Is the delay
simply due to a lack of resources?
I've confirmed on my system that only the Partner repo isn't enabled. 
Is there a "testing" repo or similar that includes more recent
versions of QEMU?
Kind regards,
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