Pricing: The price of the Online GMAT will now be location-specific, matching the pricing policy for the in-person exam. As far as I can tell, the online GMAT will cost $275 in the United States and $250 in most other countries
Exam Attempts: Test-takers will no longer be limited to two attempts at the Online GMAT. The overall GMAT attempt limits remain the same – 5 in a rolling 12-month period and 8 in a lifetime – but test-takers can now choose online or in-person for each sitting
Score Reporting: Test-takers will now be allowed to send up to 5 free score reports within 48 hours of taking the Online GMAT
Source: MBA.com