CREATE TABLE table_15842 ("State/territory" TEXT, "Text/background colour" TEXT, "Format" TEXT, "Current slogan" TEXT, "Current series" TEXT, "Notes" TEXT)

What is the current series where the new series began in June 2011?
SELECT "Current series" FROM table_15842 WHERE "Notes" = 'New series began in June 2011'
SELECT "Current series" FROM "table_15842" WHERE "Notes" = 'New series began in June 2011'