VMware have updated their support model:
Gold Support will be renamed Basic Support
Basic Support is for test, development and non-production environments, where basic response time targets and Business Day support is acceptable.
Platinum Support will be renamed Production Support
Production Support is for production environments, where faster response time targets are needed, and 24 x 7 assistance for Severity 1 issues is required.
Business Critical Support name remains unchanged
Business Critical Support is an add-on to Production Support and is for those customers who have deployed VMware technology in their critical production environments where support from a designated technical support team is required.
I can’t imagine you’d really need a Business Critical contract given the stability of their products!