Azure SQL Database elastic pools are used in managing the performance of multiple databases with unpredictable usage patterns in a cost-effective manner. Microsoft today announced a new price-performance choices for elastic pools provide even more cost effectiveness and greater scale than before. You can now have smaller elastic pool sizes and pools with higher database limits. The price of these new small pools are less and they lower the effective cost per database, and reduce price jumps between pool sizes. Also, now available are larger sizes for Basic, Standard, and Premium pools, and higher eDTU limits per database for Premium pools.
|More pool eDTU sizes|
|More storage for Standard pools|
|Higher database limits per pool|
|Higher eDTU limits per database for Premium pools|
Read more about it here.