Dale G. Renlund affirms existence of Heavenly Mother in general conference.
Dale G. Renlund, "Your Divine Nature and Eternal Destiny," April 2022 General Conference, accessed May 16, 2023
The second truth is that we have heavenly parents, a father and a mother. The doctrine of a Heavenly Mother comes by revelation and is a distinctive belief among Latter-day Saints. President Dallin H. Oaks explained the importance of this truth: “Our theology begins with heavenly parents. Our highest aspiration is to be like them.”
Very little has been revealed about Mother in Heaven, but what we do know is summarized in a gospel topic found in our Gospel Library application. Once you have read what is there, you will know everything that I know about the subject. I wish I knew more. You too may still have questions and want to find more answers. Seeking greater understanding is an important part of our spiritual development, but please be cautious. Reason cannot replace revelation.
Speculation will not lead to greater spiritual knowledge, but it can lead us to deception or divert our focus from what has been revealed. For example, the Savior taught His disciples, “Always pray unto the Father in my name.” We follow this pattern and direct our worship to our Heavenly Father in the name of Jesus Christ and do not pray to Heavenly Mother.