diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,5 +1,4 @@
-Project U-Ray
-=============
+# Project U-Ray
 
 Project U-Ray is an attempt at documenting the bitstream format for the
 [Xilinx Ultrascale and Ultrascale+ parts](https://www.xilinx.com/products/technology/ultrascale.html)
@@ -15,8 +14,77 @@
 [Project X-Ray](https://github.com/SymbiFlow/prjxray) and
 [Project Trellis](https://github.com/SymbiFlow/prjtrellis).
 
-The initial targets parts and boards are;
- * [Ultra96-V2 Zynq UltraScale+ ZU3EG Development Board (ULTRA96-V2-G)](https://www.avnet.com/shop/us/products/avnet-engineering-services/aes-ultra96-v2-g-3074457345638646173/) - Xilinx Zynq UltraScale+ MPSoC ZU3EG - $USD249
- * [Genesys ZU: Zynq Ultrascale+ MPSoC Development Board](https://store.digilentinc.com/genesys-zu-zynq-ultrascale-mpsoc-development-board/) - Xilinx Zynq UltraScale+ MPSoC ZU3EG - $USD1,149
+# Target Parts
+
+## Ultrascale
+
+### Kintex UltraScale
+
+#### Parts
+
+ * TBD
+
+#### Boards
+
+ * TBD
+
+### Virtex UltraScale
+
+#### Parts
+
+ * TBD
+
+#### Boards
+
+ * TBD
+
+## Ultrascale+
+
+### Kintex UltraScale+
+
+#### Parts
+
+ * TBD - Targetting XCKU11P?
+
+#### Boards
+
+ * TBD
+
+### Virtex UltraScale+
+
+#### Parts
+
+ * TBD - Targetting XCVU13P?
+
+#### Boards
+
+ * TBD
+
+### Zynq UltraScale+
+
+#### Parts
+
+ * Zynq Ultrascale+ MPSoC - **ZU3EG**
+
+#### Boards
+
+| Board | Maker | Price | Part |
+| ----- | ----- | ----- | ---- |
+| [Ultra96-V2 Zynq UltraScale+ ZU3EG Development Board (ULTRA96-V2-G)](https://www.avnet.com/shop/us/products/avnet-engineering-services/aes-ultra96-v2-g-3074457345638646173/) | ??? | Xilinx Zynq UltraScale+ MPSoC ZU3EG | $USD249 |
+| [Genesys ZU: Zynq Ultrascale+ MPSoC Development Board](https://store.digilentinc.com/genesys-zu-zynq-ultrascale-mpsoc-development-board/) | Digilent | Xilinx Zynq UltraScale+ MPSoC ZU3EG | $USD1,149 |
+
+
+## WebPack Parts
+
+We have a goal of initially targeting parts supported by WebPack so that anyone
+can contribute.
+
+WebPack supports the following parts;
+ * Kintex UltraScale FPGA  - XCKU025, XCKU035
+ * Kintex UltraScale+ FPGA - XCKU3P,  XCKU5P
+
+Zynq UltraScale+ MPSoC -- UltraScale+ MPSoC
+ * XCZU2EG, XCZU2CG, XCZU3EG, XCZU3CG, XCZU4EG, XCZU4CG, XCZU4EV, XCZU5EG,
+   XCZU5CG, XCZU5EV, XCZU7EV, XCZU7EG, and XCZU7CG