"Available" is a strong word, as I don't think it can be bought new anywhere. But the last version is 7, which has a couple of updates and includes an as-you-type spell checker and Euro support.It's pretty nice but font and printer handling are sometimes a little awkward. I've never used Final Writer so I don't know what that's like in comparison.
Does anyone know, by the way, if FW lets you print TTF or CG fonts to a postscript printer? WW7 subs in PS fonts and eliminates images, making it look awful :-(