diff --git a/What's-New.md b/What's-New.md
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+++ b/What's-New.md
@@ -1,5 +1,35 @@
 See [development build changelog](https://github.com/arendst/Sonoff-Tasmota/blob/development/sonoff/_changelog.ino) for planned features.
 
+## Version 6.5 20190319
+ * Release bins are back to Arduino core 2.3 for improved Wi-Fi stability with various hardware
+ * Add support for online template change using command Template or GUI Configure Other
+ * Add support for Korean language translations
+ * Add commands PowerCal, VoltageCal and CurrentCal for HLW8012, HJL01 and BL0937 based energy sensors
+ * Add command SSerialSend5 \<hexdata\> to SerialBridge
+ * Add command Interlock 0 / 1 / 1,2 3,4 .. to control interlock ON/OFF and add up to 8 relays in 1 to 4 interlock groups
+ * Add command Template 255 to copy module configuration over to current active template and store as user template named Merged
+ * Add command SetOption36 to control boot loop default restoration 
+ * Add command SetOption37 for RGBCW color mapping
+ * Add command SetOption55 0/1 and define MDNS_ENABLE to disable/enable mDNS 
+ * Add command SetOption62 0/1 to disable retain on Button or Switch hold messages
+ * Add support for Smanergy KA10 Smart Wall Socket with Energy monitoring
+ * Add support for OBI Power Socket 2
+ * Add support for YTF IR Bridge 
+ * Add support for Mi LED Desk Lamp with rotary switch 
+ * Add support for Digoo DG-SP202 Smart Socket with Energy monitoring 
+ * Add support for MAX31855 K-Type thermocouple sensor using softSPI 
+ * Add support for Luminea ZX2820 Smart Socket with Energy monitoring 
+ * Add support for Near Field Communication (NFC) controller PN532 using Serial 
+ * Add support for MAX44009 Ambient Light sensor 
+ * Add support for multiple ADS1115 I2C devices 
+ * Add support for sensor SCD30 
+ * Add property MqttCount to status 6 message representing number of Mqtt re-connections
+ * Add property LinkCount to state and status 11 message representing number of Wifi Link re-connections
+ * Add property Downtime to state and status 11 message representing the duration of wifi connection loss
+ * Add variable %timestamp% to rules 
+ * Add rule support for "==", "!=" ">=" and "<=" 
+ * Add Home Assistant status sensor 
+
 ## Version 6.4.1 20181225
 * Add Slovak language.
 * Add support for AZ-Instrument 7798 CO<sub>2</sub> meter/datalogger