Considering that it was Google who warned Samsung BEFORE this whole thing blew up - that they (Samsung) were sailing too close to the wind, I don't see this as a warning to Google per-say but to Google's partners that the warning Google gave to Samsung wasn't some sort of thing they could flip off.
Considering that the cause of the problems was Touchwiz, a third party enhancement, and not the native Android GUI itself (notice that the Nexus has been left relatively unscathed).
The HTC still makes the Chacha which is more or less the same as the pre-iPhone Android. To be honest though, one could easily say that the iPhone design builds upon the PDA designs - I remember I had a Handspring PDA with the phone module so the idea of a touch screen and minimal buttons is hardly new. The law suit was however of the culmination of numerous things rather than there being one big giant 'ahha!' moment. A thing copied here, a thing copied there and voila you have a law suit.