Two stories I want to comment on:
FatSkunk software-based attestation as a solution to mobile malware. Article by the German Technology Review. They promise a lot. I don't think this will work as advertised (I haven't seen this at work - also I can't really find a paper about it).
Smartphone Weather App Builds A Mobile Botnet. So these guys created a classic trojan application (does something very simple and useful but has a malicious part too). Of course people will download the application from some trusted website - nothing to wonder about.
Just found another mobile security talk that will be held at CanSecWest: Stuff we don't want on our Phones: On mobile spyware and PUPs - Jimmy Shah, McAfee, Inc
Update March 9th:
I forgot the Hack-in-the-Box conference in April in Dubai. They have two mobile security related talks: Base Jumping: Attacking GSM Base Stations and Mobile Phone Basebands by the Grugq and Open Sesame: Examining Android Code with undx2 by Marc Schoenefeld.