date +"This is week: %U of %Y, Sprint: %y(W%U-%U)"

This is week: 04 of 2017, Sprint: 17(W04-05)

This is week: 04 of 2017, Sprint: 17(W04-04)

date +"This is week: %U of %Y, Sprint: %y(W%U-$(date -d 'now + 7 days' +%U))"

date +"This is week: %U of %Y, Sprint: %y(W%U-$(date -d 'next week' +%U))"