The gNewSense distribution is the Free Software Foundation endorsed distribution that does away with any binary blobs and other non-free software/firmware in very strict terms. GNewSense has been based upon a stripped down version of Ubuntu Linux, but now with version 3.0 they have switched to Ubuntu's Debian roots.
GNewSense is also to supporting three architectures: i386 and x86_64/amd64 along with the Lemote Yeelong's MIPS. Download links are available from the mailing list announcement.
The stable release of gNewSense 3.0 is a fact. With the help of GNU Linux-libre and various other people helping to check and hack on freedom issues, we've been able to produce a new major version that aligns with the Free Software Foundation's freedom guidelines as well as Debian's quality standards. You'll find that the look has changed from previous releases, marking the change from Ubuntu to Debian as a base. We also support 3 architectures now: i386, amd64 and mipsel (Lemote Yeeloong).