From an April 4 press issed by the FIM:

Road Racing World Championship Grand Prix
Regulations – Decisions of the Grand Prix Commission

The Grand Prix Commission decided to introduce the following changes to the Road Racing World Championship Grand Prix Regulations:
-To add the following amendment to Art. 2.11.7, protective clothing and helmets – with immediate application:
Japan (Japanese Industrial Standard for Helmets): JIS T 8133:2000 (to be added to the list of the Recognised International Helmet Approval Marks).
-Art. 1.15.6, qualification for the race (new wording):
i) A maximum of 38 riders will be permitted for races in the 125cc class, 36 riders for the 250cc class and 28 riders for the MotoGP class.

Moreover, the Grand Prix Commission approved the issuance of FIM Grand Prix Super Licenses to the following riders:
John Hopkins (AMA)
Pere Riba (RFME)