FRCP 30 was amended in December 2020 to add a meet-and-confer requirement:
The amendment also suggests (by removing "then") that a party may designate its 30(b)(6) witness as part of the parties' discussions before the notice goes out.
No revised PDF of the rules is available yet, but Cornell's very-frequently-relied-upon page has already been updated.
No Change to Objection Procedures
One issue that commonly arises here in Delaware is that the parties serve an FRCP 30(b)(6) notice but do not receive objections until immediately before the deposition, leaving no time to resolve the issues.