diff --git a/Documentation/NuttX.html b/Documentation/NuttX.html
index 61a5501f19..941b7b4a5e 100644
--- a/Documentation/NuttX.html
+++ b/Documentation/NuttX.html
@@ -1521,7 +1521,7 @@
       <li><a href="#armcortexr4">ARM Cortex-R4</a> (2)</li>
       <li><a href="#armcortexm0">ARM Cortex-M0/M0+</a> (10)</li>
       <li><a href="#armcortexm3">ARM Cortex-M3</a> (37)</li>
-      <li><a href="#armcortexm4">ARM Cortex-M4</a> (45)</li>
+      <li><a href="#armcortexm4">ARM Cortex-M4</a> (47)</li>
       <li><a href="#armcortexm7">ARM Cortex-M7</a> (12)</li>
     </ul>
   <li>Atmel AVR
@@ -1602,28 +1602,6 @@
       <li><a href="#allwinnera10">A10</a> <small>(Cortex-A8)</small></li>
     </ul>
   </li>
-  <li>Atmel
-    <ul>
-      <li><a href="#avratmega128">AVR ATMega128</a> <small>(8-bit AVR)</small></li>
-      <li><a href="#avratmega1284p">AVR ATMega1284p</a> <small>(8-bit AVR)</small></li>
-      <li><a href="#avratmega2560">AVR ATMega2560</a> <small>(8-bit AVR)</small></li>
-      <li><a href="#avrat90usbxxx">AVR AT90USB64x and AT90USB6128x</a> <small>(8-bit AVR)</small></li>
-      <li><a href="#at32uc3bxxx">AVR32 AT32UC3BXXX</a> <small>(32-bit AVR32)</small></li>
-      <li><a href="#at91samd20">Atmel SAMD20</a> <small>(ARM Cortex-M0+)</small></li>
-      <li><a href="#at91saml21">Atmel SAML21</a> <small>(ARM Cortex-M0+)</small></li>
-      <li><a href="#at91sam3u">Atmel SAM3U</a> <small>(ARM Cortex-M3)</small></li>
-      <li><a href="#at91sam3x">Atmel SAM3X</a> <small>(ARM Cortex-M3)</small></li>
-      <li><a href="#at91sam4c">Atmel SAM4C</a> <small>(ARM Cortex-M4)</small></li>
-      <li><a href="#at91sam4e">Atmel SAM4E</a> <small>(ARM Cortex-M4)</small></li>
-      <li><a href="#at91sam4l">Atmel SAM4L</a> <small>(ARM Cortex-M4)</small></li>
-      <li><a href="#at91sam4s">Atmel SAM4S</a> <small>(ARM Cortex-M4)</small></li>
-      <li><a href="#at91same70">Atmel SAME70</a> <small>(ARM Cortex-M7)</small></li>
-      <li><a href="#at91samv71">Atmel SAMV71</a> <small>(ARM Cortex-M7)</small></li>
-      <li><a href="#at91sama5d2">Atmel SAMA5D2</a> <small>(ARM Cortex-A5)</small></li>
-      <li><a href="#at91sama5d3">Atmel SAMA5D3</a> <small>(ARM Cortex-A5)</small></li>
-      <li><a href="#at91sama5d4">Atmel SAMA5D4</a> <small>(ARM Cortex-A5)</small></li>
-    </ul>
-  </li>
   <li>Broadcom
     <ul>
       <li><a href="#bcm2708">BCM2708</a> <small>(ARM1176JZ)</small></li>
@@ -1658,6 +1636,29 @@
       <li><a href="#pic32mzef">PIC32MZEF Family</a> <small>(MIPS32 M14K)</small></li>
     </ul>
   </li>
+  <li>Microchip (Formerly Atmel)
+    <ul>
+      <li><a href="#avratmega128">AVR ATMega128</a> <small>(8-bit AVR)</small></li>
+      <li><a href="#avratmega1284p">AVR ATMega1284p</a> <small>(8-bit AVR)</small></li>
+      <li><a href="#avratmega2560">AVR ATMega2560</a> <small>(8-bit AVR)</small></li>
+      <li><a href="#avrat90usbxxx">AVR AT90USB64x and AT90USB6128x</a> <small>(8-bit AVR)</small></li>
+      <li><a href="#at32uc3bxxx">AVR32 AT32UC3BXXX</a> <small>(32-bit AVR32)</small></li>
+      <li><a href="#at91samd20">Atmel SAMD20</a> <small>(ARM Cortex-M0+)</small></li>
+      <li><a href="#at91saml21">Atmel SAML21</a> <small>(ARM Cortex-M0+)</small></li>
+      <li><a href="#at91sam3u">Atmel SAM3U</a> <small>(ARM Cortex-M3)</small></li>
+      <li><a href="#at91sam3x">Atmel SAM3X</a> <small>(ARM Cortex-M3)</small></li>
+      <li><a href="#at91sam4c">Atmel SAM4C</a> <small>(ARM Cortex-M4)</small></li>
+      <li><a href="#at91sam4e">Atmel SAM4E</a> <small>(ARM Cortex-M4)</small></li>
+      <li><a href="#at91sam4l">Atmel SAM4L</a> <small>(ARM Cortex-M4)</small></li>
+      <li><a href="#at91sam4s">Atmel SAM4S</a> <small>(ARM Cortex-M4)</small></li>
+      <li><a href="#at91samd5e5">Atmel SAMD5x/E5x</a> <small>(ARM Cortex-M4)</small></li>
+      <li><a href="#at91same70">Atmel SAME70</a> <small>(ARM Cortex-M7)</small></li>
+      <li><a href="#at91samv71">Atmel SAMV71</a> <small>(ARM Cortex-M7)</small></li>
+      <li><a href="#at91sama5d2">Atmel SAMA5D2</a> <small>(ARM Cortex-A5)</small></li>
+      <li><a href="#at91sama5d3">Atmel SAMA5D3</a> <small>(ARM Cortex-A5)</small></li>
+      <li><a href="#at91sama5d4">Atmel SAMA5D4</a> <small>(ARM Cortex-A5)</small></li>
+    </ul>
+  </li>
   <li>Moxa
     <ul>
       <li><a href="#moxart">Moxa NP51x0</a> <small>(ARMv4)</small></li>
@@ -1761,6 +1762,7 @@
       <li><a href="#stm32l475">STMicro STM32 L475</a> <small>(STM32 L4 family, ARM Cortex-M4)</small></li>
       <li><a href="#stm32l476">STMicro STM32 L476</a> <small>(STM32 L4 family, ARM Cortex-M4)</small></li>
       <li><a href="#stm32l496">STMicro STM32 L496</a> <small>(STM32 L4 family, ARM Cortex-M4)</small></li>
+      <li><a href="#stm32l4rx">STMicro STM32 L4Rx</a> <small>(STM32 L4 family, ARM Cortex-M4)</small></li>
       <li><a href="#stm32f72x3x">STMicro STM32 F72x/F73x</a> <small>(STM32 F7 family, ARM Cortex-M7)</small></li>
       <li><a href="#stm32f74x">STMicro STM32 F745/F746</a> <small>(STM32 F7 family, ARM Cortex-M7)</small></li>
       <li><a href="#stm32f75x">STMicro STM32 F756</a> <small>(STM32 F7 family, ARM Cortex-M7)</small></li>
@@ -4590,6 +4592,31 @@ nsh>
   </td>
 </tr>
 
+<tr>
+  <td><br></td>
+  <td><hr></td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      <a name="stm32l4rx"><b>STMicro STM32 L4Rx</b>.</a>
+      Architecture support for STM32 L4+ family was contributed by Juha Niskanen along with board support for the STM32L4R9I-Discovery in NuttX-7.26:
+    </p>
+    <ul>
+      <li>
+        <p>
+          <b>STM32L4R9I-Discovery</b>.
+          Board support for the STMicro STM32L4R9I-Discovery board from ST Micro was contributed by Juha Niskanen in NuttX-7.26.
+          That development board uses the STM32L4R9AI part.
+          See the <a href="https://www.st.com/en/evaluation-tools/32l4r9idiscovery.html" target="_blank">STMicro website</a> and the board <a href="https://bitbucket.org/nuttx/nuttx/src/master/configs/stm32l4r9ai-disco/README.txt" target="_blank">README</a> file for further information.
+          See also the status above for the opther STM32 L4 parts, most of which also applies to this part.
+        </p>
+      </li>
+    </ul>
+  </td>
+</tr>
+
 <tr>
   <td><br></td>
   <td><hr></td>
@@ -5181,6 +5208,7 @@ Mem:         29232       5920      23312      23312
     </ul>
   </td>
 </tr>
+
 <tr>
   <td><br></td>
   <td><hr></td>
@@ -5197,6 +5225,36 @@ Mem:         29232       5920      23312      23312
     </p>
   </td>
 </tr>
+
+      <li><a href="#">Atmel SAMD5x/E5x</a> <small>(ARM Cortex-M4)</small></li>
+
+<tr>
+  <td><br></td>
+  <td><hr></td>
+</tr>
+<tr>
+  <td><br></td>
+  <td>
+    <p>
+      <a name="at91samd5e5"><b>Atmel SAMD5x/E5x</b>.</a>
+      The port of NuttX to Adafruit Metro M4 development board was released with NuttX-7/26.
+      This board is essentially a advanced version of the Adafruit Metro board based on the SAMD21, but upgraded to the SAMD51, specifically the SAMD51J19.
+      See the <a href="https://www.adafruit.com/product/3382">Adafruit</a> web page for additional information about the board.
+    </p>
+    <p>
+      A fully-function, basic NuttShell (NSH) configuration was was available in this initial NuttX-7.26 release.
+      That initial port verifies clock configuration boot-up logic, SysTick timer, and SERCOM USART for the serial console.
+      The NSH configuration also includes use of the Cortex-M Cache Controller (CMCC) which give the SAMD51's Cortex-M4 a performance boost.
+    </p>
+    <p>
+      Because of the similarity in peripherals, several drivers were brought in from the SAML21 port.
+      Most have not been verified as of the NuttX-7.26 release.
+      These unverfied drivers include:  SPI, I2C, DMA, USB.
+      Also refer to the NuttX board <a href="https://bitbucket.org/nuttx/nuttx/src/master/configs/metro-m4/README.txt" target="_blank">README</a> file for further information about the current state of the port.
+    </p>
+  </td>
+</tr>
+
 <tr>
   <td><br></td>
   <td><hr></td>