SeedDMS and its predecessor LetoDMS are available in various versions. Only the versions 5.1.x and 6.0.x will be updated regulary.
New versions of SeedDMS can be downloaded at sourceforge.
SeedDMS is hosted at sourceforge
These old versions are still available at sourceforge, but should not be used for new installations anymore.
This old version is still named LetoDMS and can be downloaded from here.
There will be no more releases in the 3.4.x branch. Please update to seeddms.