The wait for a fresh new BlackBerry (BBRY) smartphone to launch in the United States has been absolutely grueling for diehard fans, but it’s finally over. Beginning Friday, BlackBerry’s first next-generation BlackBerry 10 smartphone is available from AT&T (T) online and in stores for $199.99 with a new two-year agreement. BGR reviewed the BlackBerry Z10 in January and called it a huge improvement over the stale BlackBerry 7 OS in many ways, but BlackBerry still has a long way to go to catch up with market leaders. Following Friday’s launch at AT&T, the BlackBerry Z10 will be available from T-Mobile beginning March 27th and from Verizon (VZ) starting March 28th.