The deadline is short – February 16 – so please move quickly.
The notice asks in particular about three of the (relatively) bigger substantive changes. There is nothing drastic here. The second one noted is an Appendix change to only including the mandatory materials, with addenda to the briefs to attach the optional parts. This approach takes care of the awkward timing issues we have now with identifying what goes into the Appendix before the briefs are done.
There is also now a proposed equivalent to a federal Rule 28(j) letter for noting authority after briefing – sort of. The proposed state counterpart only allows for filing such letters before argument, and requires a motion to cite authority after that. If you think