A quick update: You can still take advantage of the California tax credit. The $100M allocated for tax credits is still in play, as the Franchise Tax Board expects that some applications will be duplicates or invalid.
Bookmark this page for regular updates on the state credit.
The $8,000 federal tax credit is indeed kaput (though service members who were on official extended duty outside of the United States for at least 90 days between Jan.1, 2009 and May 1, 2010, may qualify for a one-year extension.) No word yet on whether the government will introduce a new credit.