I thought with the new system, CIC will be implementing the IELTS minimum requirements for all the FSW candidates. From one of the sites (this forum isnt allowing me to post links, but you can definitely google it) its mentioned that, as one of the major changes to new FSW program "Making language the most important selection factor by establishing new minimum official language thresholds and increasing points for language".
Also on another site (ciscimmigrant), it breaks down the structure of point system for IELTS.
The IELTS equivalent to CLB 8 is 7.5, 6.5, 6.5 and 6.5 on Listening, Reading, Writing, and Speaking.
Of course I am also waiting for a final guidelines from CIC regarding the new FSW program, but just wanted to give my two cents and apology i could post links as its not allowing me too.
as you said about ciscimmigrant, i just got a chance to go through with their website (http://www.cicsimmigration.co/immi/fsw/), the info is outdated. there is as such nothig mention which gives you a fair idea abt CLB. i would request you to give the website from whee u refer the above conclusion. Thanks