According to David Schuster who is the Senior Director of Software Product Management at Motorola over on Google+, it appears that Motorola's first generation of the Moto X, Moto G and Moto E are all jumping straight to Android 5.1, and skipping Android 5.0. Which we've heard the same thing for the Motorola Droid Turbo/Moto Maxx/Moto Turbo as well. And I'm sure Motorola isn't the only manufacturer that will be doing this. So far no hard dates as to when these devices will get their update from KitKat though. While Motorola had already updated a few of these devices in some regions to Android 5.0.2, they've been working on and testing out Android 5.1 for all three devices. Schuster also stated that given the changes to Android 5.1, they are now focusing all of their efforts on updating to 5.1 instead of 5.0.x, which is a good thing given all the bug fixes in Android 5.1.
Motorola announced the Moto X and G in 2013, with the Moto E coming in early 2014. They were Motorola's first products released under Google's ownership, outside of the Droid lineup they have with Verizon. The Moto X got mixed reactions, but the Moto G and Moto E got rave reviews for their hardware compared to the price of the devices. While the Moto G was under $200, the Moto E was under $150. All of these are running KitKat - with the exception of a few - right now, and owners are really excited to get Android 5.1 Lollipop on their devices. Especially after waiting almost 6 months now, since the Lollipop code did drop in late October/early November.
Since 2013, Motorola has been really good about getting software updates out the door. Although it appears they are having a bit of difficulty with the Android 5.x update to Lollipop. As we did see the Moto X (2014) get updated rather quickly, but their other models haven't seen updates. What has really helped out Motorola with updates, is sticking to an AOSP experience. This way all Motorola really has to do is optimize the code for the hardware, instead of having to integrate their skin, like HTC, LG, Samsung and many others would have to do.