posted Feb 25th 2011 4:44PM 
We can totally picture how this went down: AT&T appears to have made it not worth LetsTalk's time (or Wirefly's time) to sell its phones anymore, which means they're parting ways staring next month. LetsTalk -- wishing to end its AT&T relationship in the most spectacular fashion imaginable -- has elected to sell the Motorola Atrix 4G / Laptop Dock bundle for $250 on contract after rebates, essentially half of what you'll pay through AT&T directly (LetsTalk runs Walmart's wireless store portal, which we've linked). The fire sale might not fix some of the dock's flaws... but it certainly makes them a little less painful. [Thanks to everyone who sent this in]
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That the Atrix got itself rooted before it was even available made us wonder just how... receptive it would be to the caresses of the hacker community at large. Sadly we're finding it's perhaps a bit more frigid than its friendly demeanor might have lead us to believe. User adlx.xda over at the xda-developers forums has found that the phone's system files are not encrypted, but they are signed. This will make the process of replacing them and loading custom builds and the like rather more complicated -- but surely not impossible. 
The hotly reviewed and already rooted Atrix 4G is now on sale at AT&T. As expected, the privilege of buying direct from the carrier will set you back $199.99 with a two-year contract in the range of $39.99 per month for the Nation 450 on up to $69.99 for the Nation Unlimited with another $15 per month for a 200MB DataPlus plan or $45 per month for a Data Pro 4GB + tethering plan. Or shop on over to Amazon (or RadioShack) who lists the same HSPA+ device for $50 less with a 24-hour ship time. Remember, if you just have to have the laptop dock then you'd best do it now while it's offered with the handset in a $499 bundle (after $100 mail-in rebate and purchase of the Data Pro plan with tethering add-on) -- the same laptop dock purchased separately will cost you $499.99. No, really. 
Humans, allow us to present the latest episode of The Engadget Show -- you won't want to miss it. First up, Josh and Tim Stevens sit down with GM's chief electrical engineer Micky Bly for a frank conversation on the future of automotive technology, chatting about everything from networked vehicles (with a surprise visit from the unmistakable EN-V prototype), electric cars, advancing smartphone integration, and a world without stoplights. Then, Micky announces and demos Chevy's new MyLink infotainment system, in a world-first, Engadget Show-exclusive look at the new technology. 
Current pre-orders appear to be looking at early March delivery, but AT&T has gone on record saying that folks that elected to pre-order the mighty Motorola Atrix 4G by the 17th will receive it on the 21st of February -- next Monday -- and if they chose to have their unit sent to a store, they'll be able to get it there on the 21st as well. The rest of us will need to check out the store on the 22nd and hope for the best. We've gotten confirmation from a tipster that his pre-order has shipped with a scheduled delivery on Monday, so it's looking like they're on time. Who's standing in line next Tuesday? 
If you thought the lack of root on the Atrix 4G was going to save you a couple hundred bucks next week... well, we hate to break the bad news, but you're going to need to find another excuse not to buy it (more on that in a second). Long story short, the phone's already been rooted by a gentleman over on the ever-resourceful xda-developers forums, which means you can do all the normal things that require root access like enabling the standard Froyo mobile hotspot feature, using root apps like Titanium Backup (pictured above), and generally looking 1337 compared to your friends locked up in their walled gardens. Now, the bad news: the bootloader remains firmly locked and encrypted, so custom kernels are still just a dream -- but hey, where there's a will, there's a way. Keep the faith! 
We'd heard rumors that Motorola's Atrix 4G would cost $150, but after AT&T priced the handset at $200 we figured they were all for naught. The Shack begs to differ: it's just revealed it will sell the modular Tegra 2 superphone on Feburary 22nd for that original $150 price. That's with a two-year contract, of course, and a data plan on top, but that means you'll shave $50 off the sum AT&T is asking, or $20 off the combo deal with the (somewhat disappointing) laptop dock. Still, if history's any judge, we don't expect savings like this to be exclusive to RadioShack for long.