Prices of the D300s are beginning to hit the $900-$950 range, and it is a heck of a camera. I've just decided to sell my D90 and get a D300s so I can stop worrying about a D400 for a while. The prices won't drop so much that I care about it, and ISO 1250 is pretty darn usable.
Heck - a D90 would be a nice tide-over until the D400 announces, and they are cheap! I'm probably going to list mine for $525 when I get back from Europe in three weeks, but it has the same "issue" as the D7000 - the handling is fairly different from the D200. If you got a D7K (or a D90), I doubt that will be an issue for very long.