Hi,

A first release candidate (2012-08-13) of SL 6.3 LiveCD, LiveMiniCD and LiveDVD for 32-bit and 64-bit are now available 
for testing:

http://www.livecd.ethz.ch/download/testing/63/i386
http://www.livecd.ethz.ch/download/testing/63/x86_64

Cheers,

     Urs