The Audio 4 DJ will work with timecode in the same way that the Audio 8 DJ does.
The reference quoted in Rumblejazzs' post refers to the fact that having the Audio 4 alone will not 'enable' timecode support. If you buy Traktor Scratch Pro you will be able to use to the Audio 4 as your Soundcard for your timecode setup.
Chilly was right.
Or had you guys already established that? I got confused.