iOS 7.1 will be released to all iOS users in March, representing the first major revision since iOS 7 was launched publicly in September of last year



From MacRumors:

Sources note the next version of iOS 7 will continue with the visual improvements, minor tweaks and bug fixes reported in earlier beta versions seeded to developers.While recent reports are pegging a launch sooner than later, reliable sources say that Apple is currently planning to ship iOS 7.1, the first significant update to iOS 7, in March. The iOS 7.1 update is said to not have any ?secret features,? and it will basically be what we have been told to expect by the past five betas: some user-interface tweaks in the Phone app, an improved Calendar app, speed improvements, and numerous bug-fixes.BGR originally cited a March release date for iOS 7.1 back in late December, but a follow-up report earlier this week seemed to hedge on that claim somewhat by noting that the update was expected in the "coming weeks."

  Apple Again Rumored to Release iOS 7.1 in March