Okay, so Sony signed some papers with them and will be offering it right on the TV.
Will Samsung? Because that's the TV I have. Hulu and Amazon both support the new Samsung TVs. (Or the TVs support those services, depending on how you look at it.)
Are you aware of any cases where existing TVs gained significant new streaming features after the fact? This sort of integration is an inducement to buy, not an inducement to remain brand-loyal on your next TV purchase.
Not on your current TV. The current crop of Samsung devices don't have the processing power to run Google TV. I'm pretty sure the Sony Google TVs will be an upsell, unlike the current TV platforms the chipsets needed to run Google's platform are expensive I think you're going to need to pay for a "Google TV enabled" device, unlike the Yahoo widgets which you get for "free". This may change in the future but for now its not.
Current "Internet connected" Samsung TVs aren't cheap either; the difference to comparable basic models is in hundreds of Euros. I'm sure Sammy could get back the price of Intel CE4x00 SoC quite easily.
In those cases you're paying for a better TV not necessarily for the apps platform. You can also get a $250 Blu-Ray player with Samsung's app.
Samsung's approach is currently a walled garden - where they can subsidize the cost of the chips and support costs by doing revenue shares with the content providers. Google TV's flash enabled browser breaks this model which is another reason Samsung likely won't go there anytime soon.
There's a lot of stuff missing on the Apple TV that will be in the Google TV. There's a reason Logitech's box will be twice that. Its also fairly clear that one of Apple's main reason for the Apple TV is for users to buy content through iTunes for their TV so its not that clear if they are really making much on the apple tv itself or looking to make that up in content purchases.
EDIT: I should note however that thats not necessarily a good thing for Google. Both AppleTV and Roku feel that the happy zone for an over the top box is around $100. I kind of agree with this, since over $200 you start getting very close to the price of a PS3 or Xbox 360...
The big seller for me is Hulu, I mean right now I can use Netflix on the Wii and I can use Hulu with my laptop. Without Hulu or cable/satellite it doesn't make a whole lot of sense.
Will Samsung? Because that's the TV I have. Hulu and Amazon both support the new Samsung TVs. (Or the TVs support those services, depending on how you look at it.)