[Google Pixel Guides, News, & Discussion] kentexcitebot:
Google Pixel April Factory and OTA Images are available to download. This is a maintenance release, bumping the version from OPM1 to OPM2.

Factory: https://developers.google.com/android/images

OTA: https://developers.google.com/android/ota

You can download the April boot image from my Google Drive for custom kernel development.

Changes:

Enable Assisted Dialing support Pixel 2, Pixel 2 XL
Improve anomaly detection metrics All
Improve diskstats logging All
Improve handover from VoLTE to VoWi-Fi during Emergency calls on certain carriers Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve microvideo performance in Google Camera Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Reduce delays upon opening specific apps Pixel 2, Pixel 2 XL
Improve decoding of certain video streams Pixel, Pixel XL
Improve fingerprint and keyboard latency in certain situations Pixel 2, Pixel 2 XL
Adjust notifications when entering or exiting Wi-Fi coverage during a video call Pixel 2, Pixel 2 XL
Enable IMS911 on certain networks Pixel 2, Pixel 2 XL, Pixel, Pixel XL
Detect Wi-Fi Passport statistics for developers All
Improve lock screen performance All
Improve start time logging All
Improve magnetic sensor performance on Pixel 2/Pixel 2 XL Pixel 2, Pixel 2 XL
Reduce battery drain after modem issues Pixel 2, Pixel 2 XL
Improve modem stability on Pixel and Pixel 2 phones Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Adjust Call Forwarding UI Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Connectivity Improve multi-calling performance over Wi-Fi Pixel, Pixel XL
Improve data connectivity for T-Mobile users in parts of Australia Pixel, Pixel XL
Update certification Pixel, Pixel XL
Improve Wi-Fi stability on Pixel 2 phones Pixel 2, Pixel 2 XL
Improve handover to Wi-Fi Calling in low-coverage areas Pixel 2, Pixel 2 XL
Improve conference call performance over Wifi Pixel 2, Pixel 2 XL
Improve VoLTE performance for some carriers Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Adjust APN updating behavior All
Improve settings app icons All
Upgrade certificates to ensure continued service. Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Add methods to PeerHandle API for developers All
Update Verizon Service APK for Pixel phones Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Logging Improve Wi-Fi and RPM logging Pixel 2, Pixel 2 XL
Connectivity, Performance Improve connectivity and performance on certain carrier networks Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve notification listening apps All
Address call forwarding issue. All
Improve internet connectivity on Pixel 2 on certain WiFi networks Pixel 2
Adjust APN settings Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve MMS messaging performance on certain carriers Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Adjust battery learned capacity increment and decrement limits Pixel 2, Pixel 2 XL
Change voice domain to CS for certain carriers Pixel XL
Adjust timeouts for Phone App All
Improve stability for Pixel 2 devices in certain parts of Canada Pixel 2, Pixel 2 XL
Improve instant Apps performance All
Improve indicators for emergency call connectivity Pixel 2, Pixel 2 XL
Optimize search logic to improve battery performance. Pixel 2, Pixel 2 XL
Improve battery logging for Pixel 2 and Pixel 2 XL Pixel 2, Pixel 2 XL
Improve GPS Time performance on Pixel 2 XL Pixel 2 XL
Improve audio speaker performance during phone calls All
Adjust advanced calling settings for Verizon Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Connectivity Change to prioritize certain bands Nexus 5X, Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Connectivity Improve in-call performance for some carriers Pixel, Pixel XL, Pixel 2, Pixel 2 XL
Improve network performance on Simyo carrier Nexus 5X
Improve connectivity metrics All
Improve experience switching between LTE and Wifi Pixel 2 XL
Improve data performance for devices with certain SIM cards All
Improve autofill logging All
Improve internal troubleshooting tools All
Improve network logging

April security bulletin: https://source.android.com/security/bulletin/pixel/2018-04-01.

Most notable changes for our device includes fixing the bad Wi-Fi battery drain (under A-67593274) and improved microphone/video performance. No words about the overcurrent charging bug and multi-touch issue.