TeXLive has been updated to match 2011 release. The package
texlive-bin does not include biblatex-biber, the Perl replacement to biblatex, as the required Perl dependencies as numerous and unpackaged at the moment.
It is possible that post-install scripts show errors during the update. Note that only the second "recreating formats" message is relevant (format recreation is triggered by both texlive-bin and texlive-core installs). There are reports of eptex format generation failing (see bug report FS#25250) on some upgrade paths, but the problem does not appear when upgrading from a fresh TeXLive 2010 installation.