Log Message:
Changes 9.15:
Ghostscript now supports the PDF security handler revision 6.

The pdfwrite and ps2write (and related) devices can now be forced to \ 
"flatten" glyphs into "basic" marking operations (rather \ 
than writing fonts to the output), by giving the -dNoOutputFonts command line \ 
option (defaults to "false")

PostScript programs can now use get_params or get_param to determine if a page \ 
contains color markings by reading the pageneutralcolor state from the device \ 
(so whether the page is "color" or "mono").

Note that this is only accurate when in clist mode, so -dMaxBitmap=0 and \ 
-dGrayDetection=true should both be used.

The pdfwrite device now supports Link annotations with GoTo and GoToR actions

The pdfwrite device now supports BMC/BDC/EMC pdfmarks

Regarding the new color management for the pdfwrite device introduced in the \ 
previous release, the proscription on using the new color management when \ 
producing PDF/A-1 compliant files is now lifted.

To reiterate, also, with the new color management implementation, using the \ 
UseCIEColor option is strongly discouraged.

For further information on the new pdfwrite color management, see: Color \ 
Conversion and Management

Plus the usual round of bug fixes, compatibility changes, and incremental improvement