Very brief update, but I'm quite busy at the moment.
Android Trojan found in alternative app markets
ZeuS in the Mobile is back (Man-in-the-Mobile now for Windows Mobile)
LEET'11 has two interesting papers on mobile malware: Why Mobile-to-Mobile Wireless Malware Won't Cause a Storm and Andbot: Towards Advanced Mobile Botnets. I'm looking forward to actually read them.