According to Dick's Sporting Goods, the Cavs are supposedly already advanced to the NBA Finals. Dick's famously prematurely started selling Falcons Super Bowl gear before you know the game ended and the Patriots came back to win.
The sporting goods giant began presumptuously selling Cavaliers-branded “Eastern Conference champions” and “NBA Finals” gear on its website following Cleveland’s 112-99 victory.
A quick search of the inter-webs brought me to the still-live “Cleveland Cavaliers 2017 Eastern Conference champs” page on the Dick’s website, and sure enough — Cavs gear everywhere:
Also as Ball Don't Lie mentions, who buys conference champion gear anyway?