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@@ -8,6 +8,19 @@ Latest version: Release 4.0.0.0, 25/02/2023
 
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+## UPDATE 11/04/2023 - Release 4.5 - Support for the RP2040-Zero and new board definition system
+
+This release includes only an update to the firmware.
+
+First, the RP2040-Zero is now officially supported (no shifter board for it though). 
+You can download the firmware for it on the [releases](https://github.com/gusmanb/logicanalyzer/releases) section. Also, the pinout has been added to the [wiki](https://github.com/gusmanb/logicanalyzer/wiki/02---LogicAnalyzer-Hardware#barebones-configuration) so you can use it with the bare-bones configuration.
+
+And second, the firmware has been refactored in order to make a lot easier to add new boards. You have the complete instructions on how to add support to a new board on [the wiki firmware section](https://github.com/gusmanb/logicanalyzer/wiki/03---LogicAnalyzer-Firmware). Also, as some boards include the very popular WS2812 RGB led the firmware includes a driver for it, it's purely software-based, no timers nor interrupts needed, so feel free to use it if you want.
+
+Have fun!
+
+----
+
 ## UPDATE 25/02/2023 - Release 4.0 is up! Channels a go-go!
 
 Hi again! This is a BIG update loaded with new functions and improvements to the hardware, firmware and software!