No, they did not: http://www.coinweek.com/modern-coins/mint-cancels-2015-limited-edition-silver-proof-sets/ A regular silver 2015 proof set is available, however. In fact, you can still buy them from the Mint if you like: https://catalog.usmint.gov/silver-proof-set-2015-SW2.html
Like @McBlzr said the limited edition silver set is more expensive than buying a silver proof set and ASE separately. A few days ago the Limited Edition set was on back order. It looks to be available again.
Hey good news, since they didn't make the 2015 limited edition silver proof set and due to low sales for the regular silver proof set and silver quarters proof set, it looks like 2015 may be the all time lowest mintage regular modern silver proof dime, quarters, and half dollar (i.e. there may not be lower mintage ones in the future).