Updated whatsnew for release 2.01beta1

1 files changed, 25 insertions, 0 deletions

diff --git a/WHATS_NEW.md b/WHATS_NEW.md
index 8dd67566..3e980ae7 100644
--- a/WHATS_NEW.md
+++ b/WHATS_NEW.md
@@ -1,6 +1,31 @@
 Summary of important changes in recent versions
 ===============================================
 
+Version 2.01beta1 (Duet 2 series) and 1.21.2 (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.
+
+Bug fixes:
+- When using a mixing extruder, the feed rate for extruder-only moves was incorrect
+- If additional axes were not created in the order UVWABC then incorrect homing files might be run (thanks chrishamm)
+- On the Duet Maestro, the 7th stepper step/dir pin numbers were swapped
+- If you paused a print during a G2/G3 arc move, on resuming it the arc centre was at the wrong place. This release defers the pause until the arc move is completed.
+- If a command that interrogated the network (e.g. M122 on the Duet WiFi) was sent from USB, PanelDue or another non-network channel, the network subsystem could be accessed by multiple tasks concurrently, causing network disconnections or other errors
+- When using a bltouch, between probe points the pin retracted, deployed and retracted again
+- M206 with no parameters didn't report the current axis offsets
+- During heating, the firmware returned M408 S0 responses to the PanelDue port even if the last request was M408 S2
+- Fixed VBUS detection (thanks chrishamm)
+- If the resume threshold in the M911 command was set higher than the supply voltage then the save-on-power-off mechanism never got primed. It will now prime at thwe auto-save threshold plus 0.5V or the resume threshold, whichever is lower.
+- Fixed "2dtstc2diva=u" in debug printout
+- Where a G- or M-code command parameter was supposed to accept unsigned values only, if a negative value was supplied then it was accepted and converted to a large unsigned value
+
+New features and changed behaviour:
+- If the firmware gets stuck in a spin loop, the RTOS builds now discard LR and 16 stack dwords in order to get more useful information from the stack trace
+- Increased M999 delay to 1 second
+- The report generated by M122 now includes a list of mutexes and their owners
+- Added SW_ENC pin on CONN_SD to available GPIO ports (thanks chrishamm)
+
 Version 2.0 (Duet 2 series) and 1.21.1 (other hardware)
 =============================================================
 Upgrade notes: