"In the prerelease, there are 161 brewable unique potions. Unless we change it, there will be 2,653 with all ingredients added."
While the code for potions is already somewhat in place, there do not appear to be any plans to make them available until the 1.10 release. We do not know all 2,653 possible future combinations; however, we have compiled a brief list of some known potions and their effects. Take a look!