I am almost positive we're getting CC breaks. The question will be what their timer is because that's going to either make or break how tolerable Sleep is. If it's even 1min timer, you can break the 30s sleep and just suffer 15>7 + whatever else they have in the way of Stun/Bind/Heavy. ~35% sleep uptime is a lot more bearable than ~95%. Universally halving duration of sleep (15>7>3) for PvP would also not be a terrible idea, but halving all CC debuffs in general is a lazy kneejerk imo.
Which will admittedly just push focus to "Sleep + something else" but at least you can pretend you're doing something.