Here is the URL for Catalyst 3850 Technical Deep Dive presentation delivered during CiscoLive 2013 (London) where this product was announced.
This session covered following technical topics in detail & you can get a understanding of how this platform architectures to do all of cool stuff introduced.
Update as of 7th March 2013
I got an opportunity to go for few Breakout sessions about this topic during CiscoLive Melbourne event. Those sessions are really informative & give you great insight of this new switch/controller platform & how we should design solutions with this new architecture. Here are the pdf of those presentations & I will post the link if recorded sessions available through Ciscolive365.
1. BRKEWN-2662 Converged Access Mobility Design & Architecture
2. BRKARC-2665 Converged Access Architecture Overview
3. BRKARC-2666 Converged Access Campus and Branch Design Guidance
Cisco recently set up private user group called my3850 where you can join & learn about this product platform.