I got an update. I thought I posted it here, apparently I just posted it at Team US Cellular. Sorry about that.
I went into my local US Cellular (corporate, not franchise) to ask about the SGS2, expecting to be shot down since it hadn't been announced yet. Not only did they not shoot me down, they offered to let me play with one. Their lead tech has one. I said no, I don't need to play with somebody's personal phone, I know SGS2's specs and Samsung's UI. I just wanted to know when I could lay my hands on my own. They said April. No "at the earliest" or "by". Just April, and that's all they knew. They seemed pretty sure of it, so I won't be expecting it, for my part, before then.
I also asked about sales while I was in there. They said they will probably be doing a BOGO thing for the week of Valentine's Day because that's what US Cellular did last year, but they didn't know for sure. Also on 2/1 they're supposed to be announcing a big tax rebate themed sale.
2/1/2012 is when I'm due up for an upgrade, but if they do BOGO for VD, I should wait for that. My wife's got her heart set on the Electrify. I kinda want the Hero S myself, but if it's "equal or lesser value free" as opposed to "buy two they're both half off", I might as well step up to an Electrify myself. The interface is kind of off-putting, but I hear somebody's porting CyanogenMod 9 to it (by way of the Photon, its 4G twin at Sprint). So it might be getting some ICS love before long.