I seem to remember The Real West offerings being less than a year old. I think they came out in - I want to say February or March? The new RAF stuff is out in October and was just announced. Without any inside information, I feel like the window hasn't closed on K&C announcing them for 2010.
At first I too was a little put off by the fact they weren't post-Civil War figures, but the quality has put them on my "wish list". One of the reasons I haven't purchased TRW figures yet is that K&C has been releasing stellar stuff this year. I thought the TRW Cavalry was great, then I saw new Civil War Rebs and was blown away.
I've also prioritized completing ranges and getting retired figures first. I've been panicked the Alamo figures are going to start retiring, despite their popularity.
Finally, I'd like to see that the series is going to be supported with future releases before I jump in. I know that must be something that frustrates manufacturers, because it makes it hard to guage how popular something is.
On the other hand, I thought K&C released just the right amount of TRW figures for this range. Enough so you got both sides (I get irked when you only get one side of a war), but not too much that you can't complete the set.
Sorry to ramble...but I hope and believe K&C will release more TRW figures in 2010.