When older Lumia smartphones new to Windows 10 Mobile officially?

Already most of last year, Windows 10 Mobile trial shall be updated continuously but the question that I and many people ask is when the smartphone running Windows Phone 8.x new official to life?

This morning (18/12), the Insider users continue to receive updates Windows 10 Mobile Build 10586.36. However this is only a trial version only. Therefore, the question that many adherents Lumia want to set for Microsoft as to when the 'real use' newly launched?

Initially, the information that Windows 10 Mobile will be updated for older devices running Windows Phone 8.x in this December. However, until the present time was 18 days ago, but Microsoft is still muted. Why so long?

According to reports from the site phonearena.com Microsoft has said: From now until the beginning of 2016 there will be no Windows Phone 8.x are castling Windows 10 Mobile. This means that the update was delayed, a sad news for both themselves as well as those who are looking forward. Currently only those who participate in the new program are updated Windows Insider and trial version of Mobile Windows 10 only. Additionally, the new product launches such as the Lumia 550, the Lumia 950/950 XL and the new version of Windows 10 Mobile.

So, we will have to continue 'looking forward' to the next year before hopefully be updated to the final release of Windows 10 Mobile. It is expected the first Lumia smartphone to life include: Lumia 930, Lumia 830, Lumia 735/730, Lumia 640 XL, Lumia 640, Lumia 540, Lumia 535, Lumia 532 and Lumia 435/430.