There's not much that's new in News & Weather 2.1. This update is all about making the interface and animations consistent with other recently-Materialized apps. We've seen exactly three new things: one, the statusbar changes color to match the action bar on Lollipop, like an increasing number of Google apps. Two, the pull-to-refresh action uses the newfangled circular refresh animation instead of a horizontal bar. And three, the hamburger menu now animates into an arrow when the slide-out menu is activated. It's a proven crowd-pleaser.
You can see all three of these changes in the short video clip above. That's all there is, there isn't any more (at least on the surface). Feel free to skip this update if you're not a regular user of News & Weather - it should be coming down the Play Store pipeline in a few days at most.
The APK is signed by Google and upgrades your existing app. The cryptographic signature guarantees that the file is safe to install and was not tampered with in any way. Rather than wait for Google to push this download to your devices, which can take days, download and install it just like any other APK.
File name: com.google.android.apps.genie.geniewidget-2.1_(1473478)-2100530-minAPI14.apk
Version: 2.1 (Android 4.0+)