The T528 Low ESR/ESL Polymer Tantalum Series has a new 5mO Z case (EIA Case Code 7343-17) design.
The T521 high voltage polymer tantalum series includes 16V and 35V devices.
The T520 series capacitors are now available in the small A case sizes (EIA Case Code 3216-18) with voltage ratings of 4V and 6.3V and capacitance ranges from 47µF to 100µF.
For more information, see http://www.kemet.com