Historically there often were long delays between official releases and the sourceforge download area tends to get not updated at all. Current excuses might refer to problems with live range analysis, but if this is fixed, the next problem rising is that another excuse will have to be found. Kidding aside, we have to get better there! On the other hand there are daily snapshots available at snap http://sdcc.sourceforge.net/snap.php, and you can always built the very last version (hopefully with many bugs fixed, and features added) from the source code available at Source http://sdcc.sourceforge.net/snap.php#Source.