The official 3.0.2 tarballs are on the FSF server (and soon the
mirrors).
These are identical to the ones that Johnathan announced a few days ago.
ftp://ftp.gnu.org/gnu/gnuradio/gnuradio-3.0.2.tar.gz
ftp://ftp.gnu.org/gnu/gnuradio/gr-howto-write-a-block-3.0.2.tar.gz
Eric