CREATE TABLE table_11911 ("Model" CLOB, "Released" CLOB, "Form factor" CLOB, "Chipset" CLOB, "Memory Type" CLOB, "Max. Memory" CLOB)

what is the release date of the model precision m60?
SELECT "Released" FROM table_11911 WHERE "Model" = 'precision m60'
SELECT "Released" FROM "table_11911" WHERE "Model" = 'precision m60'