Now, this means very little to me since I was not around in the long-ago of EQ1. But what I do expect is an increase in the level cap (to 90) and some kind of character type addition, which may be a new race or two, or even a new class or two, something I would personally welcome, as long as it’s cool.
The last such addition was the Sarnak, who are… well, kind of neat, actually, but I don’t really care for the look of them, nor do I especially care for their city, although I suppose that it’s really not any harder to get around in than Freeport of Qeynos. On that note, I also expect another city to be added on the Good side, bringing the total to three per faction. I’m actually a bit surprised this hasn’t been done already. Outside the context of the expansion, I would also like to see more character slots. Hell, I wouldn’t even mind if I had to buy them through some RMT thingie.
I would also expect that, if the next expansion is going to be released in the general vicinity of November (which has been the SOE practice,) that we will be hearing some kind of announcement in the next month or two.