

http://community.arcgames.com/en/news/star-trek-online/detail/3035023
We will be increasing the number of main inventory slots for all characters by 18, and the number of character bank slots by 12. This is a free increase for all existing (and future) characters that will take effect when this week’s patch goes live.
Additionally, we will be increasing the number of times you can purchase the “12 Inventory Slots” and “12 Bank Slots” options from the Cryptic Store. This will also become available when this week’s patch goes live.