These new issues show new coat of arms:
5 dirhams: 3.75g, bronze, 22mm, plain edge
10 dirhams: 7.50g, bronze, 27mm, plain edge
25 dirhams: 3.50g, copper-nickel, 20mm, reeded edge
50 dirhams: 6.50g, copper-nickel, 25mm, reeded edge
(image and data from Dr. Wolfgang Schuster)
LINK: Qatar Central Bank