Yeah uhm, here: http://www.gamesradar.com/forums/message.jspa?messageID=1591929
http://fronttowardsgamer.com/2010/06/03/front-towards-gamer-radio-episode-7-larry-liberty-senior-developer-for-fallout-new-vegas/
Front Towards Gamer podcast features an interview with Fallout: New Vegas producer Larry Liberty. The only new information is the return of the spore plants, some info about radio stations in the game and the game having a definitive ending.
I don't have the time to check out the podcast but whatever, was the closest I could find.
(Tried to search through all NMA news tracking back to march using the keyword spore and plant as well as doing the same on the wikia's news backtracking to early june. So if this one isn't the right one then I'm out,

I don't have the patience to search anymore.

)