http://www.dakkadakka.com/dakkaforum/posts/list/6.page JForum - http://www.jforum.net
I found this to be the only worthwhile article that isn't terribly outdated.
http://www.belloflostsouls.net/2013/10/40k-rumors-tyranid-supplements.html

It appears there is no confirmed supplement yet, but I'm sure we can expect one.

Let the rumors of war begin. ]]> http://www.dakkadakka.com/dakkaforum/posts/preList/573311/6435042.page http://www.dakkadakka.com/dakkaforum/posts/preList/573311/6435042.page GMT
*If, by credible rumor, you mean pulling stuff out of your arse and throwing it against the wall to see if it sticks.

]]> http://www.dakkadakka.com/dakkaforum/posts/preList/573311/6435061.page http://www.dakkadakka.com/dakkaforum/posts/preList/573311/6435061.page GMT
There are guidelines for posting in here stickied up at the top.

Thanks!]]> http://www.dakkadakka.com/dakkaforum/posts/preList/573311/6435076.page http://www.dakkadakka.com/dakkaforum/posts/preList/573311/6435076.page GMT