Sure, we might all just be getting used to LED-backlit LCD HDTVs, but this train ain’t stopping, Chico — Samsung just got official with the 8500 series, which features the next-generation of local-dimming LED backlights. The 54.6-inch and 45.9-inch 240Hz sets are just 1.6 inches deep and offer a 7,000,000:1 dynamic contrast ratio, a 2ms response time, and an Energy Star 3.0 savings mode that continually adjusts the picture and backlight to optimize both picture quality and power savings. You’re also getting Samsung’s usual suite of connected TV features, like the Yahoo! Widget Engine, DivX playback, and DLNA support, but you’ll be paying handsomely for all this newness — the 45.9-inch UN46B8500’s MSRP is $3,599, while the 54.6-inch UN55B8500 will run you $4,499.

We’ve seen it in the flesh, and we must say VUDU is doing things right with its move to a device-agnostic service. They haven’t chucked a single feature, and the interface is rather responsive for a TV-based video service (though not quite as flashy as its PS3 and Xbox 360 counterparts). Even with a bit of crummy hotel internet getting in the way, the device managed to buffer streams of 720p and 1080p content at a fairly rapid rate — besting a best-case-scenario Netflix buffer time in most cases. It’s clear that the 5.1 surround, 1080p-equipped HDX format, which can downgrade its bitrate based on available bandwidth, is really going to eat up your pipes, but the 720p looks quite good even in the face of a somewhat limited connection. While LG and Vizio are the jumping off point for this service, it’s VUDU’s stated aim to land on pretty much any home theater device that’ll have them — we can’t imagine Microsoft or Sony taking very kindly to the offer, but it’s hard to argue with this level of HD selection. Video of the service in action is after the break.

Sure VIZIO only just showed off new updates in its high end XVT series, but it’s already planning the next generation of LCDs with VIZIO Internet Apps included. Packing widget functionality, 802.11n wireless networking and slider QWERTY Bluetooth remote, the SV422XVT, SV472XVT and VF552XVT Connected HDTVs are coming home in November, October and December, respectively. Already on deck to serve up content for your widgets are Vudu, Revision3, Facebook, Twitter, Rhapsody, Blockbuster OnDemand, Showtime, Flickr and more. The biggest surprise? There’s apparently no price premium planned for these features, with the 55-inch clocking in at the same $2,199 price as the model it’s replacing, though the 47-inch jumps $200 over the previous edition to $1,699, while adding the local dimming LED backlit technology previously reserved for the 55-inch. The 42-inch will be the first and cheapest available at $1,199 (sans LED).