I recieved this message this afternoon:

Thank you for writing. I wish to inform you that BASS has reached an
agreement to end the CITGO sponsorship after this season based on
CITGO's decision to move in a different direction. We are in discussions
with a number of potential new sponsors.

Please let me know if you have any additional questions or concerns.
Thanks again for your feedback.

Stephen Yates
BASS Membership Services