the new Arduino IoT Cloud platform with MKR IoT Bundle via public internet?

hi,
this new IoT Cloud platform looks amazing

with this IoT kit :
https://store.arduino.cc/arduino-iot-mkr1000-bundle

is this designed to work only with local WiFi or will there also be a way to let it communicate via 2G/3G/4G (GPRS, UMTS, LTE) and a SIM card with the public internet?
e.g., I came to this idea by this device: Arduino GSM Shield 2 (Integrated Antenna)

or will be needed another MKR board apart from MKR1000?

update:
Just saw that perhaps the MKR1400 is more suitable than MKR1000 to work with public internet Arduino MKR GSM 1400 .

Are there any example sketches available about projects connecting to GSM band internet?