The story says:

perl 5.14.4 and 5.16.3 will be released soon, including these fixes. There is no plan to make a new release of any other version

So, no, is the answer to your question.

For more details see the section on Support and Maintenance in perldoc perlpolicy. It says:

We “officially” support the two most recent stable release series. 5.12.x and earlier are now out of support. As of the release of 5.18.0, we will “officially” end support for Perl 5.14.x, other than providing security updates as described below.

So Perl 5.8.3 is well outside its window of support. The same document also says:

To the best of our ability, we will provide “critical” security patches / releases for any major version of Perl whose 5.x.0 release was within the past three years. We can only commit to providing these for the most recent .y release in any 5.x.y series.

I’m pretty sure that this fix qualifies as a critical security patch. However version 5.8.3 falls outside of even this policy for two reasons. Firstly because 5.8.0 was not released in the last three years (it was released in 2002) and secondly because 5.8.3 is not the most recent release in the 5.8.x series (that was 5.8.9).

So, no, you really can’t expect to see a patched release from the Perl 5 Porters. As I see it, you have three options.

1/ Contact your vendor and ask them for a patched version.
2/ Build your own new version from the maint-5.8 branch. But note that this will almost certainly be a patched version of 5.8.9.
3/ Accept that you’ve made a bit of blunder by letting your version of Perl get so out of date and use this as a reason to update to a supported version of Perl