Lollipop update for Samsung users is expected in January

Samsung Electronics is still rolling out Android 4.4.2 KitKat and Android 4.4.4 KitKat updates to Galaxy smartphones and tablets but its Galaxy S and Note devices may receive the new software in January, 2015.
Google released Android 5.0 Lollipop OTA (Over-The-Air) update to the Nexus 4, Nexus 5, Nexus 7 (2012 & 2013 editions), and Nexus 10 last week. Google Play Edition devices, including Sony Xperia Z Ultra, Samsung Galaxy S4, HTC One M7, M8, LG G Pad 8.3, and Moto G will also get the software update.
It was reported that some of Samsung's devices might come with Android 5.0 Lollipop from December.
However, current users of Samsung devices may have to wait until January next year to receive Android 5.0 Lollipop.

Google Play Edition devices that will get Android 5.0 Lollipop update:

Motorola: Moto X (Gen 2.), Moto X (Gen 1.), Moto G (Gen 2.), Moto G (Gen 1.), Moto G 4G-LTE, Moto E, Droid Ultra, Droid Maxx, and Droid Mini.
But, seems like Moto G has already got the update !

Samsung: Galaxy S4, Galaxy S5, Galaxy Note 3, Galaxy Note 4

Zenfone: Zenfone series 4, 5, 6, Padfone S (PF500KL) and Padfone Infinity (A89)

LG: LG G, G2 Pro, G Pro, G2, G3

Here are some, Leaked screenshots of LG G3 Android 5.0 Lollipop

But, LG's announcement has made it clear that update would release in near future

HTC: HTC One, HTC One (M8), One Mini (1 & 2) and One Max

Sony: Xperia Z Ultra GPE (Google Play Edition), Xperia Z, Xperia ZR, Xperia ZL, Xperia Z1, Xperia Z1s, Xperia Z Ultra, Xperia Z1 Compact, Xperia Z2, Xperia Z3, Xperia Z3v, Xperia Z3 Compact, Xperia Z3 Tablet, Xperia Tablet Z, and Xperia Z2 Tablet

But, for sony it seems like Android 5.0 Lollipop update's Source code has already been released #AOSP.

Xiaomi: Mi 2 and Mi 2S