Accompanying this announcement is the implementation of a 10,000 row limit on the
dev plan. This row limit was designed to correspond to the 5mb limit on the existing free
Please note that these plans are still beta, and Heroku Postgres has not yet announced a migration schedule from the
shared plan. However you can start using these plans today.
Read more about the new plan, and the mechanics of the row limits on the Heroku Postgres Blog.