Existing Windows Phone can not get Windows Phone 8 update

After a long revolution of mobile os , windows phone moves behind once again. The existing windows phone could not get windows phone 8 update. This will affect the sale of current windows phone.

But all existing windows phone get a mimic version of windows 8 called "windows phone 7.8". This wp7.8 lacks many features.

Although, with a conflicting drawback , windows phone 8 has many features. The new wp8 is NFC(near field communication) supported. WP8 has mobile wallet,updated start screen,encryption and secure boot.It also include internet explorer 10 with HTML5.0 . It also supports external sd card for more data.