Get 50% more Marriott Bonvoy points now. Transfer at least 900 Membership Rewards points to Marriott Bonvoy by October 31, 2019, and receive an additional 50% more points from your partner. The credit will be made 8 weeks after the end of the campaign by Marriott Bonvoy.
Current rate is 3 MR = 2 Marriott, this would make it 1:1 (60000MR -> 40000 Marriott + 50% (20000) = 60000 Marriott points total. )
This 'bonus' makes it the same as the old 3 MR = 1 Starpoint, which was terrible then.
Link