Sky Go has today been updated to add support for the latest flagships from Samsung, Sony, HTC, and Motorola. The app now works on the Galaxy S4, the HTC One, the Xperia Z, and the RAZR HD.

AT&T opened preorders for the Samsung Galaxy S4 this morning. The 16GB model costs $200 with a two-year carrier contract, or off-contract for $639. The S4 is currently available in two colors: “Black Mist” and “White Frost.”

According to AT&T’s website, preorders will ship Tuesday, April 30th and arrive on Friday, May 3rd. Some users were reporting issues with AT&T processing orders earlier this morning, but hopefully the issues have been fixed since then. A 32GB model isn’t available for preorder yet, but don’t be surprised to see it appear soon.

US Cellular, a smaller U.S. carrier, also started accepting S4 preorders today.

The new Sony Xperia Z looks to be off to a terrific start, with analysts reporting that 4.6 million units have been sold in just 40 days. Some of that success is being attributed to the fact that Sony announced the device before competitors like HTC and Samsung had a chance to throw their latest flagships into the mix.

The Samsung Galaxy S4 is scheduled to arrive on AT&T on April 26, and you’ll be able to reserve yours at Staples from April 16, according to “tentative launch dates” revealed by a leaked company document. The device will then be made available on T-Mobile on May 1, followed by Verizon on May 30.

With the Galaxy S4 right around the corner, now is one of the best times to buy a Galaxy S III. No, I’m not crazy. If you’re not too worried about having the latest smartphone and you want to save yourself some cash, you can now get Samsung’s year-old flagship on the cheap.

Sprint just announced a new purple model that’s available from today, priced at $99 after a $50 mail-in rebate.