The world seems substantial enough, plenty of room to build. Probably half a kilometre square.
(I checked the wiki, 255x255 blocks but seems bigger)
There is quite a good Creative mode with a large number of blocks including most of the ones you would expect in the PC version. No redstone yet.
The WIFI works well for multiplayer.
Last edited by HenriDeacon; 10th August 2012 at 10:19 PM.