@pimskeks announced the release over Twitter:
Linux version (x86/x86_64) of #Absinthe #A5 #jailbreak is done!
Also version 0.3 of #Absinthe #A5 #jailbreak is available for OSX and Windows. Nothing really new, so no need to re-apply :-)
#Absinthe 0.3 only has some cosmetic changes, and a potential bug fix for win32 (only really few people seem affected)