According to both ThinkSecret and AppleInsider, new builds of 10.4.9 have been released to developers.
The build lists no known issues, similar to the last build earlier this month, and AppleInsider points out that the lone major change in this build has been a bug fix in ImageIO that had affected image import speeds. Previous builds of 10.4.9 already listed over 40 other bug fixes.
Both sites indicate that it looks as though this will be the last minor update to Mac OS 10.4 "Tiger" (other than security updates).