The basic requirements for a Flight Manual can be found in CS 29.1581; section (b) specifies the status of the associated information.
CS 29.1581
General
(a) Furnishing information. A Rotorcraft Flight Manual must be furnished with each rotorcraft, and it must contain the following:
(1) Information required by CS 29.1583 to 29.1589.
(2) Other information that is necessary for safe operation because of design, operating, or handling characteristics.
(b) Approved information. Each part of the manual listed in CS 29.1583 to 29.1589 that is appropriate to the rotorcraft, must be furnished, verified, and approved, and must be segregated, identified, and clearly distinguished from each unapproved part of that manual.
(c) Reserved.
(d) Table of contents. Each Rotorcraft Flight Manual must include a table of contents if the complexity of the manual indicates a need for it.
As others have stated, appropriate information from the flight manual can be included in Part B of the Operations Manual (which will also have to be approved under the new regulations). Unapproved elements of the Flight Manual can be issue by the manufacturer without reference to the Certificating Authority.
As far as JAR-OPS 3 is concerned:
JAR-OPS 3.005 General
(c) Each helicopter shall be operated in compliance with the terms of its Certificate of Airworthiness and within the approved limitations contained in its Helicopter Flight Manual. (See Appendix 1 to JAR-OPS 3.005(c).)
JAR-OPS 3.130 Manuals to be carried
(3) The current Helicopter Flight Manual is carried in the helicopter unless the Authority has accepted that the Operations Manual prescribed in JAR-OPS 3.1045, Appendix 1, Part B, contains relevant information for that helicopter.
JAR-OPS 3.1050 Helicopter Flight Manual
An operator shall keep a current approved Helicopter Flight Manual or equivalent document for each helicopter that it operates.
Jim