Even if it's not finished yet, AmigaOS 4 in it's current state (after update 3) is pretty usable for me and it fulfills all my computing needs, so I don't care if it's gets updated more this year or not, since it works perfectly for me (and not only for me). Final release would be more useful for the news followers and the antiamiga dudes, who would still complain, than for the users themselves, since it's wouldn't have much new features added or vital bugs fixed, but it works pretty well now anyways.
Well someone might jump and say there is not decent browser for it. So what? I browse the net pretty often, but mostly non commercial sites and I don't have problems obtaining the needed information, or reading specific sites. Well some flash anims and shockwaves are missing, but not a big loss nevertheless. On some sites the Google adds are missing, like now on Amiga.org for example, so using Amiga for browsing have plusses as well.
Not an office suite for AmigaOS 4 available! Not a big loss either. The classic DTP, SpreadSheet and Text editors work fine.
No games - well I am not a big fan of the latest 3D accelerated games, although some FPS games are already ported to AmigaOS 4, I prefer the classics and MAME 0.97 works pretty fine for me, plus I switch to FPSE from time to time to play some Scooby Doo, Crash Bandicoot, Do Don Pachi, Gradius Gaiden etc..
Although the latest video and audio codecs are not yet available for the Amiga, I have almost no problems playing movies with MPlayer, and even with cyrillic subtitles, so my movies watching needs are fulfilled as well. When I like some movie, I have no problem burning it on DVD with Frying Pan, since update 3 which added support for UDMA capable drives.
So more updates or final release of AmigaOS 4 coming sooner or later, as an AmigaOS 4 user, I mostly don't care. As I said previously, to me it seems that the outside people are looking more about it, for purchasing or other reasons, I don't now.