Lowercase letters are now available as part of the Classroom Kit. You can get detailed information on our Classroom Kit by visiting playosmo.com/schools/. Please reach out to email@example.com for purchasing assistance.
We do plan to transition the current upper case letter tiles to a combination of lower- and uppercase letter tiles in the summer of 2017. And, as part of this transition, we do plan to offer the complete new letter tile set for sale as a separate item. Stay tuned for this change.