Update Arduino/GShield systems to GRBL 1.1e?

For those of us still running the old Arduino with Shield hardware combination, is it recommended that we upgrade GRBL to the latest 1.1e software?

If so, does Inventables have a fork already configured for the X-Carve?

What are the benefits to upgrading?

Have any of the configuration parameters changed? Anything to look out for?

Thanks.