Product Description & Replacement: http://www.atmel.com/images/we142203.pdf
The following mature Atmel AVR programmer and debuggers will be permanently phased out:
ATAVRISP2, ATJTAGICE2, ATJTAGICE3
Replacement:
ATATMEL-ICE, ATATMEL-ICE-BASIC, ATATMEL-ICE-PCBA. Any of these will replace the above programmer and debuggers.
http://www.atmel.com/images/we142203.pdf