The Slim build is posted on the Builds page here http://www.piriform....ccleaner/builds several days after the Standard build has been released.
Please realize that here on the forum we have no control over the waiting period for the Slim, so if you don't want to wait, download the Standard build instead and just untick any offers you don't want installed, or download the Portable build, extract it over your version and delete portable.dat.
Thank you.
Please Note The version in "U3 Format" has been retired by Piriform. We apologize to anyone who might still be using it.