[luatex] letterspacing in LuaTeX

[Pablo Rodríguez]

Hi there,

I have read in the microtype documentation (page 39) that tracking is 
not supported in LuaTeX because the \letterspacefont is missing.

I'm not a technical guy, but what I read from the LuaTeX Reference beta 
0.60.2 is that the letterspacefont is already implemented.

Is there a way to get letterspacing through the microtype package in 
LuaLaTeX?

Thanks for your help,


Pablo