According to the latest blog entry Kali 1.0.5 will come out next week.

The above patch fixed the issue for us, allowing encrypted LVM installs to complete and boot successfully. As with any Debian bugs we encounter, we send patches back to Debian to improve the distribution we build upon. A fix for this installer bug will come out in our next point release (1.0.5) next week. People generating their own ISO images though live-build will automatically receive the fixed package.
I'm not clear on the quote above.

If I have 1.0.4 and generate an updated ISO after 1.0.5 is available, will the resulting ISO be a 1.0.5 ?
and will it be the same as a 1.0.5 ISO from the download section?