Yes. If partner has a silver or Gold competency level for Cloud platform they are entitled for Signature cloud support.

For Silver Competency this includes

• 20 Partner Advisory Hours, Technical Presales Assistance, Partner Support Community
• 15 Product Support Incidents
• Unlimited Signature Cloud Support Incidents*

For Gold Competency this includes 

• Partner Support Community
• 50 Partner Advisory Hours and Technical Presales Assistance
• 20 Product Support Incidents
• Unlimited Signature Cloud Support Incidents*

 * Limited to the Microsoft Cloud Service specifically associated with a competency.