Release Notes: This release introduces BLAST Archive format to permit reformatting of stand-alone BLAST searches with the blast_formatter. It adds support for translated subject soft masking in the BLAST databases. It adds support for the BLAST Trace-back operations (btop) output format. It adds command line options to blastdbcmd for listing available BLAST databases. Improved performance of formatting of remote BLAST searches. Uses a consistent exit code for out of memory conditions. A fix for a bug in indexed megablast with multiple space-separated BLAST databases. The Windows installer has been fixed for 64-bit installations.