There's an interesting apparent contradiction between that ("don't expect this young and brave code to be shipped with Fremantle") and

WARNING: pure speculation follows:

So far there has been no official confirmation or denial of a cellular telephony stack in Fremantle. We have seen some intriguing hints (mysterious keypad layouts, BT/CSD telephony stack, interesting call states defined in MCE, MIDI playback, Vibra API to name a few) in the alpha/beta SDKs but none of these is quite a smoking gun on its own. Put them all together though and it's easy to jump to conclusions.

It may be that the cellular call support is not quite ready yet and will come in Harmattan, or there will be a different (closed-source) stack in Fremantle but IMHO it looks like we'll see it in maemo sooner or later. Now I don't necessarily think that's a good thing (I don't need a phone personally and FWIW I fully agree with Ari Jaaksi's 2005 views on this), but since the sacrifices necessary for making hildon usable as a phone UI have already been made (but let's keep that discussion out of this thread) I don't care that much. Just get the Fremantle devices, whatever they may be, stable and let us buy them please :-)