The Society of Actuaries has made several slide presentations from the 2012 Life & Annuity Symposium (May 21-22, 2012) available at their website.
Section 44 at the link below involves a discussion of life underwriting trends including simplified issue, older age underwriting, new medical markers, new MIB codes, and predictive analytics. Once at the site, click on "View Presentation" to view the slides.