High Performance Mobile Symfony

Am reading this slideshow about high performance mobile sites which provides great basic introduction into mobile development (eg I’ve never heard of “inline images” before watching this):

and trying to figure out the right strategy for building mobile site using symfony.
So far I was able to find only these articles/plugins which can be helpful for me:

http://www.symfony-project.org/blog/2008/06/09/how-to-create-an-optimized-version-of-your-website-for-the-iphone-in-symfony-1-1
(pretty old one post on symfony blog)

http://www.symfony-project.org/plugins/sfMobileJPlugin (plugin which includes a convenient class for mobile contents developers)

I guess this HTML5 Mobile App Framework will be useful for me too:

http://www.sencha.com/products/touch/