it would be usefull for some applications if the code in imp gets a notification before new firmware is uploaded, then it can finish some tasks, shutdown external hardware, may be flush ram to external eeprom or nv storage.
I am planning to expand my datalogger with external eeprom in case of http-server or wifi failure. but writecycles are limited and slow, so would like to collect a few samples and write them to external eeprom is larger blocks.
Remco