On quick overview, the redesign looks very nice and very minimal and modern-ish. Great improvement!
I use a small screen device (320x452 as reported by howbigismybrowser.com). I think the layout could use some improvements to make it correctly fit in a single page. Currently, some screen shots of how it looks:
I think a little tweak to the layout could make it work well for that resolution too. As far as I know, a width of 320 is a standard one. So, it would be nice to make it work well for it. FWIW, the current mediawiki homepage works well for the same resolution (320x452) ;-)