Android KitKat/Nexus 5

Anyone here used android 4.4 (Kitkat ) or nexus 5? How is it? Any features that you like?

Here is what they have on the official Android page:

Bluetooth MAP support

Android now supports the Message Access Profile (MAP) so Bluetooth-enabled cars can exchange messages with your devices.
Chromecast support

With your Android device and a Chromecast, you can enjoy your favorite online entertainment, from Netflix, YouTube, Hulu Plus, and Google Play on your HDTV.
Chrome web view

Applications that embed web content now use Chrome to render web components accurately and quickly.
Closed captioning

Android now supports closed captioning and subtitles. To turn on closed captioning, go to Settings > Accessibility and turn on Captions.
Device management built-in

If you ever lose your device, you can find or wipe it with the Android Device Manager
Downloads app redesign

The Downloads app has been redesigned, giving you new sorting options and list and grid views for all the files you’ve downloaded.
Easy home screen switching

If you love to customize your device and have installed one or more home screen replacements, you can switch between them easily in Settings > Home.
Email app refresh

The redesigned Email app has a fresh new look with nested folders, contact photos and better navigation.
Full-screen wallpapers with preview

Your wallpaper now extends through the notification tray and system buttons. And when you change your wallpaper, you can preview just how it will look before you set it.*
HDR+ photography

HDR+ mode on Nexus 5 automatically snaps a rapid burst of photos and combines them to give you the best possible single shot. Daytime pictures are vivid with clean shadows, and nighttime photos are sharp with less noise.*
Infrared blasting

On devices with an infrared (IR) blaster, Android now supports applications for remote control of TVs and other nearby devices.
Location in Quick Settings

Access your location settings from anywhere with a new tile in Quick Settings.
Location modes and monitoring

If you want to conserve battery, go to Settings > Location to switch between high accuracy and battery-saving location modes. There’s no need to toggle GPS, Wi-Fi, and mobile network settings. And to see which apps have recently requested your location, go to Settings > Location.
Low-power audio playback

Android 4.4 on Nexus 5 lets you listen to music for longer - up to 60 hours of audio playback.*
Music and movie-seeking from lock screen

Jump to a specific part of a song or video from your lock screen. Just long press on the play or pause button and then select the point you want.
Secure app sandboxes

Application sandboxes have been hardened with Security-Enhanced Linux.
Step counting built-in

When you use fitness apps like Moves on Nexus 5, the phone acts as a pedometer to count steps. Android 4.4 and updated hardware make this a more battery-friendly way to measure your activity.
Tap to pay, built a new way

Android 4.4 introduces a new, open architecture for NFC payments that works with any mobile carrier, and lets apps manage your payment information in the cloud or on your device. Now you can tap to pay with Google Wallet or other apps at more than a million stores.
Touchscreen improvements

Improved software and Nexus 5’s new hardware mean Android responds to your touch faster and more accurately than ever before.*

I am using kitkat on nexus4. I like the google caller Id feature. Display on some of my apps is little messed up after the update.
Don't panic if you can't find phone app after upgrade...its been replaced by hangout.
Rest later.

Re: Android KitKat/Nexus 5

I think I m going to take TofiBaba's suggestion and update my T-mobile S4 with the 4.4 Play Edition ROM.

Re: Android KitKat/Nexus 5

In addition to the GPE 4.4 I also installed the GummyBear ROM, which I did like quite a bit. I specially liked the new dialer and the (as doppler mentioned) the caller-id feature. Most of the other items you posted are N5 specific. Others like NFC open payments are all over. Pedometer and other health stuff was present in the S4 (and now Note3) as well.

There are a lot of sensors build into most phones these days we just don't find the right apps for it. For instance the S4 etc has Super AMOLED secreens which turn on only the pixels that they have info for, saving battery. The cases that they, therefore, sell can light up just the window and give you the info.
There's an app called CPU-Z that would give you info on these specific sensors, like the gyroscope and the proximity sensor or step detector. Check them out.

Re: Android KitKat/Nexus 5

Will do right after I update the phone.....looking forward to some changes....

Re: Android KitKat/Nexus 5

Isn't NFC a failure like Passbook?