diff --git a/Makefile b/Makefile
index 4fbdda8a..05cfc567 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 
 export FW_MAJOR := 0
-export FW_MINOR := 14
+export FW_MINOR := 15
 
 PROJ = Greaseweazle
 VER := v$(FW_MAJOR).$(FW_MINOR)
diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index f86b1585..e390802d 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -3,6 +3,15 @@
 ** Keir Fraser <keir.xen@gmail.com>
 ************************************
 
+** v0.15 - 5 May 2020
+ - Host tool improvements:
+   - IPF: More robust conversion to raw flux for writeout
+   - HFE: Fix crash when writing out HFE from third party tools
+   - F7 Firmware improvements:
+     - Preparation for High Speed USB (future board using 730Z8 MCU)
+     - Enable Instruction and Data caches (10x execution speedup)
+     - Various improvements to bandwidth as reported by 'gw.py bandwidth'
+     
 ** v0.14 - 29 April 2020
  - IPF: Full write support (weak data, index misalignment)
  - New GW commands: bandwidth, erase