Perhaps at one point (OK, not really "perhaps") but I'd hazard to say that this now depends on who you talk to. GM Choi, Jung Hwa has stated several times that the ITF and WTF are both Taekwon-Do and that "the time for being enemies is past."
I don't know what the other heads of the ITF groups are doing in this regard, however. With all of them attempting to re-enter South Korea I doubt very much you're going to hear much of the "those guys are karate" rhetoric these days.
On the other hand, I don't expect the KKW to say anything remotely similar to such sentiments (although it was great to see that some of the ITF pioneers were given a much overdue recognition last year). While the ITF, especially under GM Choi, has made modest gains in schools and students in South Korea it is still a small presence and will never have anywhere near the influence or size that the KKW does (which is fine by me, frankly). I very much doubt that the KKW will feel that such a small presence will warrant any sort of rapprochment. I could defintiely be wrong but would be very surprised if this were to happen on any sort of large scale.
Pax,
Chris