Tiles Are Here to Stay
That's right: Windows Phone 8 is obviously still very much a tile-based experience, so if you weren't a fan of them in the first place, you're unlikely to be convinced here to adopt Windows Phone. The good news is, for those of who do enjoy this particular UI, the live tiles are much better implemented this time around.
For one, the tiles are resizable, allowing for more customization on the homescreen. Granted, they cannot be sized freely; come on, that would simply be chaos. Rather, users can choose from three sizes: large, medium, or small. The first two were available on Windows Phone 7 (they were the column-width rectangle and the square, respectively), but the addition of the small size mixes things up a bit, with four small tiles equivalent to one medium tile.