Chrome 18 was recently released and would have silently updated, and it enables GPU Accelerated Canvas 2D by default. It's no longer an experiment, it's a feature now!
WebGL mode shouldn't appear blurry - it's actually the only mode you can control the sampling in (point vs. linear), you can't control that in Canvas 2D mode.
That crossed my mind but the graphics are still blurry so I figured it wasn't just turned into a feature. Choosing point sampling didn't work with WebGL enabled back then and it doesn't work now, in any browser. The graphics may be slightly less blurry, but blurry nonetheless D:
Here's a comparison with an old screenshot I had lying around..
-Before Chrome 18 with GPU Accelerated Canvas 2D enabled and WebGL disabled
-Chrome 18 w/ WebGL enabled and point sampling (same with WebGL disabled)
-Chrome 18 w/ WebGL enabled and linear sampling (same with WebGL disabled)
<img src="http://dl.dropbox.com/u/17634050/BQ_Comparisons.png" border="0" />