docs(roadmap): update the roadmap

Add info about default PIDs

Author: amilcarlucas

ROADMAP.md

@@ -62,16 +62,19 @@ We need contributors to help realize this roadmap! Here's how you can get involv
 
 ## Timeline
 
-- **Q4 2025**: Complete ESC configuration automation prototype
-- **Q1 2026**: Release notch filter automation tools
-- **Q2 2026**: Add ArduPlane support
+- **Q2 2026**: Complete ESC configuration automation prototype
+- **Q3 2026**: Release notch filter automation tools
+- **Q4 2026**: Add ArduPlane support
 - **Q3-Q4 2026**: Extend support to Rover and Helicopter
 - **2027**: Complete support for remaining vehicle types
 
 *Note: Timeline is indicative and depends on contributor availability and project priorities.*
 
 ## Reached Milestones
 
+- 2026.04.28 - [96% test coverage](https://coveralls.io/builds/79158977)
+- 2026.04.26 - Partial ESC telemetry configuration in component editor
+- 2026.04.21 - 30 code PR contributors
 - 2025.11.26 - 83% of [Gold OSS best practices](https://www.bestpractices.dev/en/projects/9101?criteria_level=2) reached
 - 2025.11.25 - [91% test coverage](https://coveralls.io/builds/76659097)
 - 2025.11.22 - 100 Github stars

TUNING_GUIDE_ArduCopter.md

@@ -860,8 +860,10 @@ Repeat the steps from [Section 6.1.1](#611-use-ardupilot-methodic-configurator-t
 
 ## 6.14 Optional PID adjustment
 
-If you have a very small, or a very large vehicle that requires non-default PID values for a safe flight.
-Usually, smaller vehicles require lower than default PID rate values. Larger vehicles usually require higher than default PID rate values.
+The default PID gains of ArduCopter are for a 9'' to 12'' inch prop diameter sized vehicle.
+If you have a much smaller, or a much larger vehicle it might require non-default PID values for a safe flight.
+Usually, smaller vehicles require lower than default PID rate values.
+Larger vehicles usually require higher than default PID rate values.
 
 Repeat the steps from [Section 6.1.1](#611-use-ardupilot-methodic-configurator-to-edit-the-parameter-file-and-upload-it-to-the-flight-controller) to edit and upload the `16_pid_adjustment.param` file