Update README.md to reflect v0.3 changes

Author: mcknly

README.md

@@ -25,7 +25,7 @@ BreadboardOS is built on top of FreeRTOS, enabling fast integration of new funct
 
 The central component of BBOS is the fantastic [microshell](https://microshell.pl/) project, which provides CLI functionality. Currently, a [fork](https://github.com/mcknly/microshell) of microshell is used, which includes some additional customization. The CLI implementation is organized into POSIX-style folders/files providing a recognizable user-interface for interacting with MCU hardware.  
 
-As of the first release, BBOS is implemented on a single MCU platform - the Raspberry Pi RP2040 (Pico, Pico W, etc). However, the project has been structured such that all hardware-specific code resides in a single directory, with a header file providing HAL functionality. The platform was built with porting in mind.
+As of the v0.3 release, BBOS is implemented on a single MCU family - the Raspberry Pi RP2xxx (Pico, Pico W, Pico2, etc). However, the project has been structured such that all hardware-specific code resides in a single directory, with a header file providing HAL functionality. The platform was built with porting in mind.
 
 ### _Notable Features_
 
@@ -35,6 +35,7 @@ As of the first release, BBOS is implemented on a single MCU platform - the Rasp
 - Selective peripheral hardware initialization routines
 - Interacting with chip I/O and serial buses directly from command line
 - Watchdog service for system failsafe recovery
+- Command history using arrows or ctrl-a/ctrl-z
 
 ### _Demo_
 
@@ -58,6 +59,8 @@ Ensure that the environment variables `$FREERTOS_KERNEL_PATH` and `$PICO_SDK_PAT
 
 It is suggested to add these commands to the user's `~/.profile`, `~/.bashrc`, etc depending on the system.
 
+**NOTE for RP2350**: As of 10/2024, official FreeRTOS has not yet merged in support for RP2350. Rasberry Pi's [fork](https://github.com/raspberrypi/FreeRTOS-Kernel) must be used. Further, there is a [bug](https://forums.raspberrypi.com/viewtopic.php?p=2253073#p2253073) in the Pico SDK, use the `develop` branch to incorporate the fix. Hopefully these changes will be merged upstream soon.
+
 ### Setting up BreadboardOS
 
 - Clone the repository: `git clone https://github.com/mcknly/breadboard-os.git`
@@ -76,10 +79,10 @@ set(PROJ_VER "0.0")
 set(CLI_IFACE 0)
 
 # MCU PLATFORM - set the MCU platform being used (i.e. the subdir in 'hardware/')
-set(PLATFORM rp2040)
+set(PLATFORM rp2xxx)
 
-# BOARD - set the board being used (i.e. 'pico', 'pico_w', etc)
-set(BOARD pico)
+# BOARD - set the board being used (platform-specific prebuild.cmake contains more information about boards)
+set(BOARD pico2)
 ```
 
 Using CLI over USB requires no additional hardware; using CLI over UART will require a USB-UART adapter (i.e. FTDI FT232 or SiLabs CP2102). Using CLI/UART enables some additional early boot status prints.