It means that every song on the CD will be worth listening to, that it can be an album you can listen to all the way through.
personally, I hope it is all "Killer", but I feel that maybe he rushed it too much. 32 tracks in 2 months? Most artists usually put out close to 2 albums a year with about the same amount of material. If anyone can pull off "all killer, no filler" it would be Tech, but I have my doubts about the album. For the most part, the tracks on the samplers IMO are solid. I guess I'll have to wait and see on July 1st.