The following add-on and templates have been updated for compatibility with 1.3.9a and php5.3 and are available in the downloads section

ADD-ONS
jscroller sidebox package
links manager
order steps tableless
returns authorization
testimonial manager

TEMPLATES
cold_steel template
comstock template
cork_board template
desert_noon template
forest_path Template
glacial_age template
mystic_river template
ocean_front template
rustic template
zencart_zen template