Updated whatsnew for release 2.01beta2

1 files changed, 29 insertions, 2 deletions

diff --git a/WHATS_NEW.md b/WHATS_NEW.md
index 3265c199..264d2de8 100644
--- a/WHATS_NEW.md
+++ b/WHATS_NEW.md
@@ -1,8 +1,35 @@
 Summary of important changes in recent versions
 ===============================================
 
-Version 2.01beta1 (Duet 2 series) and 1.21.2 (Duet 06/085)
-==========================================================
+Version 2.01beta2 (Duet 2 series) and 1.22beta1 (Duet 06/085)
+=============================================================
+
+[This release is in preparation]
+
+Upgrade notes:
+- Compatible files are DuetWiFiserver 1.21 and DuetWebControl 1.21.2beta2. Use of DWC 1.21 or earlier may result in "Not authorized" disconnections if you have a password set. However, if your machine is a CoreXY then you may need to use DWC 1.21 for the axis jog buttons to work correctly.
+
+Bug fixes:
+- Non-movement commands were not correctly synchronised with movement commands when there were more than 8 non-movement commands interspersed with more than 2 seconds of movement
+- If M28/M29 was used in a macro file to then the commands between M28 and M29 were executed as well as being written to the target file
+- If you used the jog buttons in DWC before homing the axes, and you didn't use M564 H0 in config.g, then as well as the "insufficient axes homed" error message, a stack underflow error message was produced
+- Neither M561 nor G29 S2 adjusted the user Z coordinate if bed compensation was previously active (G29 S2 did if you ran it twice)
+- Duet 06/085 only: fixed a buffer overflow in the Netbios responder code
+- Duet 2 series: when an under-voltage event occurred, spurious driver status warnings/errors were sometimes reported
+- Duet 2 series: when an under- or over-voltage event occurred, the VIN voltage reported was the current voltage, not the voltage when the event was recorded
+
+New features/changed behaviour:
+- On the Duet 2 Maestro, the 2 optional add-on drivers are now assumed to be TMC2224 with UART interface
+- When the Z probe type is set to 9 for BLTouch, the probe output is no longer filtered, for faster response
+- If an error occurs while reading or writing the SD card, the operation is retried. The M122 report includes the maximum number of retries that were done before a successful outcome.
+- On the Duet WiFi/Ethernet, at startup the firmware does additional retries when checking for the presence of a DueX2 or DueX5 and/or additional I/O expansion board
+- When a resurrect.g file is generated, it now includes G92 commands just before it invokes resurrect-prologue.g, to set the assumed head position to the point at which power was lost or the print was paused. This is to better handle printers for which homing Z is not possible when a print is already on the bed. Caution: this doesn't allow for any Z lift or other movement in the power fail script.
+- RTOS builds only: added a separate software watchdog to monitor the Heat task
+- RTOS builds only: the software reset data now includes which task was active
+- Upgraded compiler to 2018-q2-update
+
+Version 2.01beta1 (Duet 2 series) and 1.21.2beta1 (Duet 06/085)
+===============================================================
 Upgrade notes:
 - Compatible files are DuetWiFiserver 1.21 and DuetWebControl 1.21.2beta2. Use of DWC 1.21 or earlier may result in "Not authorized" disconnections if you have a password set.