I uploaded the current 5.4 release candidate – there’s an ISO and an IMG file, though your local mirror may be a better place to get it than those links.  Or just wait; I think the release won’t be long.

Note that I was smart for once and named it ‘rc1’, so if there’s another release candidate, it can be named ‘rc2’.  I used ‘rc’ in previous releases and was never sure if I should name a second candidate rc1, rc2…