Engadget

Today's definitely a big day for Tumblr: there's a refreshed iOS app in the iTunes Store! And, well, a bit of other news, too. But you'll hear plenty more about that later -- for now, it's all about mobile. The blogging platform just updated its application for iPad and iPhone, adding that "fancy new post type chooser" that recently made its debut on Android. The design tweak enables one-click access to a variety of post tools, letting you submit video, chats, links, quotes, photos and text, with colorful icons to match. It's yours for the downloading at the source link below.

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Defense Distributed's plan is to put the power of guns in the hands of every person with access to the internet and a 3D printer. Until now, however, we'd only seen the Liberator pistol built using an expensive industrial-grade printer -- despite the fact that the blueprints for gun have been downloaded by thousands of people who don't have access to such a high-end machine. One of those folks decided to put the Liberator in the hands of the printing proletariat by making it with a consumer-level Lulzbot A0-101 3D printer, a nail and some common screws.

This new version, called the Lulz Liberator, differs from the original in that it's got a rifled barrel and uses metal hardware to hold it together (as opposed to printed plastic pins). Printing it took around two days and used about $25 worth of generic ABS material, and the pistol produced was fired successfully nine times, but its creator claims it could've shot more. It's still a far cry from a Glock or Beretta, of course, as the gun misfired several times, and removing spent shell casings required the use of a hammer. So, it's not quite ready for prime time, but it's one more bit of proof that the age of printed pistols is officially upon us.

[Image Credit: Michael Guslick]

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Will video Hangouts launch when you're on AT&T's 3G network? Can you FaceTime with a friend over LTE? The carrier's current video chat support is confusing at best. Following Google's Hangouts app launch last week, we attempted to try out the Android version over AT&T's HSPA network. After hitting connect, a message popped up instructing us to hop over to WiFi in order to complete the call. The carrier followed up by suggesting that Google was to blame -- as the software was a replacement for a native Android app, it was up to Mountain View to flip the switch. Now, by the end of this year, AT&T has pledged to support all video chat apps, regardless of which device you own, what you pay in fees or whether or not you downloaded the app yourself. This is good news, no doubt. You can catch AT&T's statement just below.

For video chat apps that come pre-loaded on devices, we currently give all OS and device makers the ability for those apps to work over cellular for our customers who are on Mobile Share or Tiered plans. Apple, Samsung and Blackberry have chosen to enable this for their pre-loaded video chat apps. And by mid-June, we'll have enabled those apps over cellular for our unlimited plan customers who have LTE devices from those three manufacturers.

Throughout the second half of this year, we plan to enable pre-loaded video chat apps over cellular for all our customers, regardless of data plan or device; that work is expected to be complete by yearend.

Today, all of our customers can use any mobile video chat app that they download from the Internet, such as Skype.

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The Arduino Robot wasn't the only interesting product the Italian company launched at Maker Faire this past weekend. Arduino Yún combines a Leonardo board (featuring Atmel's ATmega32u4) with a MIPS-based WiFi SoC (Atheros AR9331) running Limino (an OpenWRT / linux derivative). It includes everything you'd expect from a Leonardo board plus WiFi, wired Ethernet, a USB host port and a microSD card slot. The Arduino side can be programmed wirelessly and communicates with the WiFi SoC via SPI and UART interfaces using the new Bridge Library, which delegates networking to the linux side. Out of the box, the board behaves just like any standard WiFi access point with a full web interface -- it even allows SSH access. Arduino Yún is the first of a family of WiFI-enabled products and will be available late June for $69. Check out the gallery below for some closeup shots, and follow the source for more details.

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Pinterest is already an absurdly popular way to save stuff from around the web, be it shoes you love, accessories for your bridesmaids or decorations for your man cave. One thing the social-bookmarking service has been missing, however, is context. Now it's offering a way for companies to deliver more info, through metadata attached to particular types of pages. Rich pins, as they're being called, can automatically attach price and availability to a product, or ingredient lists to recipes. There are also movie pins, which let sites attach ratings and credits to films. Pinterest has lined up an impressive list of partners to help it launch the new feature, including Netflix, Etsy, ASOS, REI, The North Face, Modcloth, Bon Appetit, Epicurious and Real Simple. All your old pins that now have contextual data will automatically be updated (which you'll be able to identify thanks to icons below them), and you can check out some example boards at the source link.

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Anyone who's tried out the new Hangouts feature in Gmail in place of the traditional Google Talk option got a bit of surprise when they went to make an outbound call from their computer. That feature gets disabled when the new Hangouts replacement is switched on, leaving folks looking to make calls with no other option than to revert to the old Google Talk in Gmail or seek out another alternative. That's apparently just a temporary change, though, as Google's Nikhyl Singhal has now confirmed that both outbound and inbound calls will "soon be available." Unfortunately, he's not getting any more specific than that for the time being. He did, however, reiterate that "Hangouts is designed to be the future of Google Voice," and that "making/receiving phone calls is just the beginning," further adding that "future versions of Hangouts will integrate Google Voice more seamlessly."

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A stock GS4 may look virtually indistinguishable from its predecessor, but it looks like Samsung's got a new variant of its flagship phone that'll bring it some much-needed visual flair. The folks at GSM Arena unearthed photos of a GT-I9295 model (allegedly called the GS4 Active) sporting a bright red shell with black inserts at the top and bottom and a trio of physical buttons on its chin. If the results returned by the AnTuTu benchmark are to be believed, the phone's equipped with standard GS4 fixins: a quad-core CPU clocked at 1.9Ghz and an Adreno 320 GPU (aka, a Snapdragon 600 SoC) and a 1920 x 1080 display. Naturally, there's no word on pricing, carrier support or an arrival date, but there are a couple more photos of the handset at the source.

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