This testing release only features the updated compile and profiling 
tools.  We do not have the eclipse packages included within this release.

http://ftp.scientificlinux.org/linux/scientific/6x/external_products/devtoolset/<arch>/2.0

Or from yum --enablerepo=sl-testing install <package>


Unless any critical bugs are reported we expect to release this 
'compiler only' version of Developer Toolset 2.0 next week.

For more information on these updated compilers please review the 
upstream documentation: 
https://access.redhat.com/site/documentation/en-US/Red_Hat_Developer_Toolset/

Pat

-- 
Pat Riehecky

Scientific Linux developer
http://www.scientificlinux.org/