The Libertarian Party national web page now has a list of Libertarian Party candidates in the November 2012 election. See it here. This list will grow. In some states the time for the party to nominate candidates is still in the future.
The list mentions some California candidates for partisan office, but all of those candidates are barred from running in November because they failed to place first or second in the June 5 primary.
The state with the most Libertarian candidates so far is Texas.