Are firmware updates provided regularly?

Yes. Two kinds of firmware updates occur regularly.

• a)  Security updates and bug fixes- as necessary and usually urgent.
• b)  Feature updates- these happen less frequently when new features become available.

From the MotoSync+ app, you can enable auto-update by going to Settings>System>Firmware Update, which allows the firmware to be automatically updated at 2 a.m.
Alternatively, you can disable auto-update, in which case you will receive a notification when updates are available and can choose to apply them.