The official releases of LuaTeX are available as tags in subversion. They have numbers made up of a major an minor number. In prints we render the minor number in two digits. The revision is indicated by a one digit number and there can be at most 9 revisions. So, a number 1.05.3 means: major version 1, minor version 5, revision 3. Internally TeX has then \luatexversion (a counter) with value 105 and \luatexrevision 3 (a token representing the character three).
Don't take your source from trunk as we don't provide any support for that. There can be intermediate and broken versions there but don't bother to contact us about trunk sources. We do of course listen to bug reports of the latest tag as well as the current TeXlive tag. If needed we will release a revision. Bug reports should always come with an simple plain or ConTeXt example that exposes the bug.
For your convenience we have collected the latest stable binaries here. In
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save to disk.
|linux||i586 x86-64 ppc|
|os-x||intel ppc universal|
If you install the ConTeXt distribution for your platform the right binaries and some support files will end up on your computer.