Links to interviews:

http://marvel.com/news/comics/24704/brian_bendis_forges_an_invincible_iron_man
http://marvel.com/news/comics/24701/invincible_iron_man_live_chat
http://www.comicbookresources.com/article/bendis-discusses-armoring-up-with-invincible-iron-man

Of particular note, I like how in the first link, Bendis talks about his experience writing The Confession and how that reflects how he approaches Tony's character in a focused solo title rather than his usual team books (Avengers or GotG).