It's a brand new day for Cricket, AT&T's budget wireless arm. Last year, the mobile giant announced plans to acquire Leap Wireless, Cricket's parent company, and has since launched a major refresh, formally introducing the new service today. After purchasing new devices, Cricket customers will be able to access AT&T's nationwide 4G network, including LTE. All plans include unlimited domestic calling, messaging and international texting to 35 countries, and come in at $35, $45 and $55 monthly (after a $5 auto pay credit), with 500MB, 2.5GB and 5GB of data, respectively. You won't be charged for data overages -- instead, Cricket will cap your speed at 128 Kbps for the rest of the billing period.There's also an unlimited talk and text plan for feature phones that'll run you just $25 per month, excluding data and MMS. Cricket is offering group discounts as well, taking $10 off a second line, $20 off a third line, and $30 off your fourth and fifth device added to each account. Finally, with the announced improvements, AT&T will also be retiring the Aio brand, perhaps best known for being the target of a T-Mobile lawsuit over the subsidiary's use of the color magenta. New Cricket customers will get a $50 mail-in-rebate when purchasing a device, so you can pick up a ZTE Prelude for free or a Moto G for $100 after cashing in.