Could go either way. I'm thinking they won't, actually. There seems to be some big new direction the Don Draper story is going in, and I doubt it's going to include Rachael. I'm not sure, though. One thing I love about "Mad Men" is that I never know what to expect. Hard series to read.
Midge, the Greenwich Village chick, is done, though. She's out. Pretty sure about that. I think the question'll be how they develop Betty's character. I can just about see a future for Don and Betty if I squint hard enough. Following a visit from about six or seven more wrecking balls that oughtta be swinging through their home any minute now...it'll take some twists before it's done, of that I'm sure.
And who knows? Maybe Don and Peggy are destined for each other. I could see that, too.
The summer can't arrive fast enough!