Thanks to portal Asus ZenTalk we had a chance to see a list of Asus smartphones that will receive an update to latest version of the system Android 6.0 Marshmallow.
At this point, we know that the latest five models of the manufacturer are getting an update like ZenFone 2, PadFone S or ZenFone Selfie and we do not know if list will be including another, maybe older models in the future. Full version names of lucky models, taht are getting system updates includes:
PadFoneS (PF500KL)
ZenFone2 (ZE550ML/ZE551ML)
ZenFone2 Deluxe / Special Edition (ZE551ML)
ZenFone2 Laser (ZE500KG/ZE500KL/ZE550KL/ZE600KL/ZE601KL)
ZenFone Selfie (ZD551KL)
We do not know the exact date of release, but the producer recommends to follow ZenTalk for updated and specific dates.

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