The GCC 4.7 merge testing is currently in progress. We're a little late with it, so I'm spinning the release speculatively. This being the case I've made the lp:gcc-linaro branch read-only, just in case.
This shouldn't prevent anybody from reading the branch with "lp:gcc-linaro", but the "lp:~linaro-toolchain-dev/gcc-linaro/4.7" name will be broken for a while, so you may find "bzr pull" broken. (The reason being that the only way to make a bzr branch read-only is to change its owner.)
I will put the branch back to its normal state as soon as the release is done.
Andrew