Testability influence on software design - super new concept from Google or old habitual TDD?

Hey,

just found out these slides from GTAC '10 that generally represent how flexible s/w design impact on testability. Then authors draw conclusions that design should be impacted (or even driven) by testability - see latest slides. In this presentation you will find good examples, explanations and correlation with OO practices.
Now I'm thinking - nothing new - it is all about Test driven development (TDD). So you write and after that you have a hint on how to design s/w code itself as you will support that test further. If so, there are less chances to make mistakes "not see a tree for the forest" kind of. I'd like to experience such a care about testability by evolving in code design analysis

Hey mid and grand SW companies, look inside Mozila's testing business. Like It!

Steve Balmer exclaimed "Devs, Devs, Devs..." (hopefully now it is not turned to 'Sales, Sales, Sales'). Mozila's testing sounds like Tools, Crowd, Community.

I like their Litmus for testing management and as well as lots of free add-ons. Honestly talking about browser, my pref have shifted to Chrome but I'm still with FF.