The new menu items have been spotted as early as last year but seem to be getting a wider release starting last month (no appearances here on the West Coast as far as I know though).
They feature feta cheese and tzatziki sauce along with the standard choice of bread and veggies. There's both a steak and chicken version. The wrap looks to be made with a flour tortilla.
Prices for the new sub (steak or chicken) come in at $4.75 for a 6-inch and $7.50 for a footlong (may vary).