Here is the back of the mailer, that went out to homes in the Senate President’s district touting his accomplishments.
Usually, folks do this type of stuff when they are planning to run for higher office, however he hasn’t announced anything yet.
No matter what it is, it won’t be to help Republicans get elected to the Senate (the spirit of the committee’s purpose). Nor does it appear to even “support the election of candidates of the leader’s political party,” the much looser statutory purpose of the fund.
Feel free to speculate and enjoy.