Update to Twitter lists: You can now make up to 1,000 lists (up from 20), and each list can include up to 5,000 accounts (up from 500).
— Twitter for News (@TwitterForNews) May 30, 2013
The folks at Twitter have made some enhancements to the list feature. As reportered on @TwitterForNews, you will now be able to make up to 1000 lists and each list can contain up to 5,000 accounts. This is quite a huge change because you could only create 20 lists because you could only make up to 20 lists with up to 500 accounts. I did not care that much about this feature. That being said I think this might encourage me to create more lists.