It should come as no surprise, with devices like the Fujitsu IS12T slated for launch next month, that Windows Phone 7 Mango has been declared code complete and has been released to manufacturers.
According to the WindowsPhoneDev Podcast the software has also been sent on to carriers for testing, hopefully presaging a roll out of the software update to older devices around the same time as new devices are coming on board also.
Apparently the gold build will be 7710, versus 7661 on the developer preview currently being widely used in the Windows Phone 7 community. We have seen this build on the recently leaked new videos of the Nokia Sea Ray.
Of note is that we have seen the Twitter functionality in existing Mango build also becoming functional as Microsoft sporadically makes linking the account in Windows Live available.
Earlier this year there have been serious doubts by many that Mango would arrive in 2011, making this rapid pace of events I am sure very reassuring for many.
Update: Microsoft told Eric Zeman from PhoneScoop that the software has not been RTM’d yet. Clearly if not now then very soon.
Listen to the Windows Phone Dev Podcast here.