Nope, it’s not just you. Google did indeed undergo a minor redesign today, increasing the size of result titles, adding more white space around results and — most dramatically! — removing underlines from links.
Something as small like a pixel-wide blue line may not seem like a profound change, in the grand scheme of things, but it does represent a major shift from the aesthetics of the early web (see: GeoCities, Altavista, multi-colored Times New Roman, horribly patterned page backgrounds) to something a little sleeker and, well … totally new. In fact, it’s the accumulation of exactly this kind of tiny change that took Google from this, in 1998:
… to this, in 1999:
… and this, in August 2001 (“cool jobs”!)
Here’s December 2001:
… and we finally end up with Google’s latest iteration.
So what we’re looking at isn’t just an artificial tweak to a minor design element — it’s basically the slow death of the early web as we know it. Thank goodness we still have “Internet archaeologists” to keep its memory alive.