With the existing boards I use IDEs such as vscode-platformio or Eclipse IDE since they have more features than the Arduino IDE. I wish to use the same for the new Nano BLE board. Has any of you used another IDE to program, download and debug( Serial interface) with the new nano ble board ?
It might take a little while for PlatformIO to add support for the Nano 33 BLE because they need to create their own specialized support package. However, it's my understanding that VS Code and Eclipse just use the same official hardware core that the Arduino IDE does. So I see no reason why those wouldn't work just fine with the Nano 33 BLE right away. There is nothing special that the IDE needs to do for these boards. You could use the Nano 33 BLE with versions of the Arduino IDE from before Arduino had any plans to create those boards.
So if you already have one of those alternative IDEs installed, just give it a try.