Rules 1.18 and 7.3, and 7.1, 7.2 and 5.5
Rules 1.1, 5.3 and 5.5
Rule on Practice Pending Admission and Comment to Rule 5.5
Rule for Admission by Motion
Rule 1.6 and Rule 1.17
Comment paragraph  to rule 4.4 was also amended as follows:
 Some lawyers may choose to return a document or DELETE electronically stored information unread, for example, when the lawyer learns before receiving it
Thanks to Andrew Perlman for the links.