diff --git a/README.md b/README.md
index ca63ff4..2b4bf61 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ It has been written to complement grblHAL and has features such as proper keyboa
 
 ---
 
-Latest build date is 20240903, see the [changelog](changelog.md) for details.  
+Latest build date is 20240907, see the [changelog](changelog.md) for details.  
 
 __NOTE:__ Build 20240222 has moved the probe input to the ioPorts pool of inputs and will be allocated from it when configured.
 The change is major and _potentially dangerous_, it may damage your probe, so please _verify correct operation_ after installing this, or later, builds.
diff --git a/changelog.md b/changelog.md
index 5e5529e..72fafe1 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,23 @@
 ## grblHAL changelog
 
+<a name="20240907">Build 20240907
+
+Core:
+
+* Added some RGB LED strip properties, improved handling of single meaning G-code words claimed by user M-codes.
+
+Plugins:
+
+* Misc: updated for new RGB LED strip properties.
+
+Drivers:
+
+* iMRX1062, STM32F4xx and STM32F7xx: updated for new RGB LED strip properties.
+
+* RP2040: revised pin mappings for BTT SKR Pico board. Added misc. plugins to compilation.
+
+---
+
 <a name="20240903">Build 20240903
 
 Core:
@@ -8,7 +26,7 @@ Core:
 
 Drivers:
 
-* ESP32, RP2040, STM32F4xx, STM32F7xx: updated for core changes related to the RGB HAL.
+* ESP32, RP2040, STM32F4xx and  STM32F7xx: updated for core changes related to the RGB HAL.
 
 * RP2040: renamed bluetooth files to avoid conflict with SDK.
 
diff --git a/gcode.c b/gcode.c
index 01d21b2..d1864ad 100644
--- a/gcode.c
+++ b/gcode.c
@@ -804,6 +804,12 @@ status_code_t gc_execute_block (char *block)
 #endif
 
     char *message = NULL;
+    struct {
+        float f;
+        uint32_t o;
+        float s;
+        tool_id_t t;
+    } single_meaning_value = {0};
 
     block = gc_normalize_block(block, &message);
 
@@ -1694,7 +1700,22 @@ status_code_t gc_execute_block (char *block)
             ijk_words.j = Off;
         if(user_words.k)
             ijk_words.k = Off;
-
+        if(user_words.f) {
+            single_meaning_value.f = gc_block.values.f;
+            gc_block.values.f = 0.0f;
+        }
+        if(user_words.o) {
+            single_meaning_value.o = gc_block.values.o;
+            gc_block.values.o = 0;
+        }
+        if(user_words.s) {
+            single_meaning_value.s = gc_block.values.s;
+            gc_block.values.s = 0.0f;
+        }
+        if(user_words.t) {
+            single_meaning_value.t = gc_block.values.t;
+            gc_block.values.t = (tool_id_t)0;
+        }
         axis_words.mask = 0;
     }
 
@@ -3313,7 +3334,12 @@ status_code_t gc_execute_block (char *block)
 
         if(gc_block.user_mcode_sync)
             protocol_buffer_synchronize(); // Ensure user defined mcode is executed when specified in program.
+
         gc_block.words.mask = user_words.mask;
+        gc_block.values.f = single_meaning_value.f;
+        gc_block.values.o = single_meaning_value.o;
+        gc_block.values.s = single_meaning_value.s;
+        gc_block.values.t = single_meaning_value.t;
         hal.user_mcode.execute(state_get(), &gc_block);
         gc_block.words.mask = 0;
     }
diff --git a/grbl.h b/grbl.h
index 87ab84a..fe0804c 100644
--- a/grbl.h
+++ b/grbl.h
@@ -42,7 +42,7 @@
 #else
 #define GRBL_VERSION "1.1f"
 #endif
-#define GRBL_BUILD 20240903
+#define GRBL_BUILD 20240907
 
 #define GRBL_URL "https://github.com/grblHAL"
 
diff --git a/rgb.h b/rgb.h
index ff47b7d..8bd7cce 100644
--- a/rgb.h
+++ b/rgb.h
@@ -41,6 +41,15 @@ typedef union {
     };
 } rgb_color_t;
 
+typedef union {
+    uint8_t mask;
+    struct {
+        uint8_t is_blocking :1,
+                is_strip    :1,
+                unassigned  :6;
+    };
+} rgb_properties_t;
+
 /*! \brief Pointer to function for setting RGB (LED) output.
 \param color a \a rgb_color_t union.
 */
@@ -68,6 +77,7 @@ typedef struct {
     rgb_write_ptr write;                    //!< Optional handler for outputting data to Neopixel strip.
     rgb_set_intensity_ptr set_intensity;    //!< Optional handler for setting intensity, range 0 - 255.
     rgb_color_t cap;                        //!< Driver capability, color value: 0 - not available, 1 - on off, > 1 - intensity range 0 - n.
+    rgb_properties_t flags;                 //!< Driver property flags.
     uint16_t num_devices;                   //!< Number of devices (LEDs) available.
 } rgb_ptr_t;