I have to say . . . Good Goin'.
I've made my plans clear on this forum - get a spare T3 when the prices drop, and hopefully "hang out" with OS5 for a while. I might do the same tomorrow if I didn't have the T3 "tweaked" and full of apps I frankly would miss too much to be without.
HOWEVER: I must say that from what I'm hearing here and elsewhere, I would rather buy a PPC than Cobalt. If the worst fears are true you'll be able to use about as many "slick" Palm OS apps in Cobalt as you can on a PPC anyway . . . so you might as well jump and get the cool battery packs, WiFi and 600+MHz processor. Applications tend to be MUCH larger, but that's the way Palm's going too, so that's moot.
This is why I went with OS5 and sacrificed a little of what I had in OS4. Hopefully I'm wrong, and Cobalt whizzes in with terrific compatibility for older applications - if it doesn't I'm not interested in doing without my "faves." I have paid particular attention to discussion of "launchers" on here lately, since apparently my "choice" may well NOT FUNCTION in OS6. Sad. It USED to be all about "10,000 developers writing programs worldwide." Many hung it up after OS5, and a LOT MORE will after OS6.
If you're not excited about being bound to a cellphone/PDA combo, and want to use older apps, you may well be sorry OS6 ever materialized. KimH has taken the big leap and will almost certainly miss some of his Palm apps - but the rot stops there and he's got a reliable OS that hasn't (as far as I know) required any of the "fixes" the T3 needed nor the bugs the T3 still has.
I won't say "good luck;" I'll say this: congratulations. Bold move but now you'll know for sure. There must be alternate launchers to "make it Palmish" and there may be "cooler" stuff for business on PPC than has been available for Palm in a long time.