Update README

Author: GOB52

README.md

@@ -10,6 +10,11 @@ M5UnitUnified is a library for unified handling of various M5 units products.
 UNIT SONIC I2C is an I2C interface ultrasonic distance sensor. This allows for easy I2C integration and multi-sensor operation using a single BUS, to save I/O resources. The module features an RCWL-9620 ultrasonic distance measurement chip with a 16mm probe, which the ranging accuracy can reach 2cm-450cm(accuracy up to ±2%). It is ideal to apply in robotics obstacle avoidance, fluid level detection, and other applications that require you to perform measurements.
 
 
+## Future Plans
+- Unit Ultrasonic(SKU:U098) will support soon.
+- Unit Ultrasonic-IO(SKU:U098-B2) will support soon.
+
+
 ## Related Link
 See also examples using conventional methods here.