its hard to say whether or not it got harder. ive only seen probably less than 20 SDNers post their DAT scores since 2007 started, and that's definitely not enough to say anything about the test considering the 10K+ number of applicants. and i don't think its safe to assume that SDNers are automatically superman when it comes to DAT just because we've seen other people on here score very high.
I'm not discrediting those that say it has gotten harder. maybe it really has. im just saying that it's not worth getting all worked up over. I took my test in January, and I saw stuff that I've never seen in any prep material, including some ochem problem types that came out of nowhere. Does that mean the test changed on me too then? I'd like to think that it's not possible for anyone to memorize or study off a handful of study materials and be able to get 29's across the board. I think that defeats the purpose of a standardized test.