is it ever going to be updated? 64bit version? is there a good alternative to yafray for rendering GI for animations? with good fast raytracing something like vray or mental ray?
I don’t know.
I do know 64 bit Yafray is available for Ubuntu. Don’t know what you are running though.
You could try Yafaray - http://www.yafray.org/forum/viewforum.php?f=12
http://www.yafray.org/forum/viewtopic.php?t=1159
Luxrender development is going at great speed as always, it will soon be able to render animations.
Speed is still slower then Yafray, but seeing as the project is only 6 months old it’s obvious the speed will improve greatly.
Right now it’s not ready for production, but be sure to keep track of progress 
nice i will try out luxrender is this similar to indigo?
Well, unlike indigo, you can also do biased renders in Luxrender(renders that go for a specific quality, as compared to rendering forever till you like how it looks). Ive tried it out, and its a pretty strong renderer considering how new it is. There are bugs, but all in all? Pretty impressive.
I definitely recommend trying it out.