Nokia's Lumia 920 smartphone could be unveiled on Oct. 5 on AT&T, according to sources speaking to Bloomberg. Which device AT&T will unveil is unclear, though previous rumors suggested a Nov. 2 launch.

According to two people familiar with the matter, AT&T's will sell the "first [Nokia] device running Windows Phone 8 software for the U.S. market," reported Bloomberg. The device is unspecified, but will probably be either Nokia's Lumia 920 or 820. The devices are both built for Windows Phone 8.

Nokia unveiled the smartphones earlier this year; Nokia boss Stephen Elop described the phone as the most innovative on the market, perhaps hinting towards competitors like HTC, in a The Verge interview. HTC's 8X smartphone drew comparisons to Nokia's Lumias, causing an employee of the Finnish company to speak out.

HTC has also not confirmed a launch date for its devices, though off-contract prices were recently revealed from third parties. Lumia 920 prices were revealed to be more expensive than higher end iPhone 5s, though Nokia is not confirming prices.

Bloomberg also reported that Verizon is planning to sell a Windows Phone 8 smartphone later this year. At this point, a fourth quarter launch seems likely. With Windows Phone's debut in 2010 Microsoft presented a suite of devices. It is not clear how Microsoft will approach Windows Phone 8's launch.

Microsoft's launch of Windows Phone 8 represents a big bet for the company. Data revealed its app store is lagging behind iOS and Android, with just 100 apps submitted per day versus 700 on iOS. Equally, developer support is needed on Windows Phone 8 and Windows 8. Microsoft allows developers to co-build apps, theoretically meaning apps should released on both platforms simultaneously. The operating systems share the same Modern UI.

Analysts predicted 5,000 apps as the competitive target Microsoft needs to meet for Windows 8's Store. Currently the app count is just under 3,000 with 22 days remaining before launch.

Windows Phone 8 is expected to launch later this year.

AT&T and Nokia spokespersons declined to comment.