If you were hoping to get in on some free StarCraft later in the Summer, that's no longer an option. Blizzard have essentially put a paywall up in front of the upcoming StarCraft: Brood War ladder and matchmaking features.
These two major features were a big deal for its sequel - StarCraft II - and just about any multiplayer game in recent memory. Back in the 90s, however, it was just something that didn't exist.
Once Blizzard got around to testing the modern features set to make its way into the legacy StarCraft: Broodwar experience, they realised that their former plans to offer the feature to both those paying out for StarCraft: Remastered and those taking advantage of the soon-to-be-free legacy StarCraft: Brood War, it became "untenable" to offer Matchmaking to those who didn't want to pay out of pocket.
The original plan was to have StarCraft: Remastered out there for those who wanted some shiny and somewhat new while added its matchmaking feature to the old game and making the entire experience free for those who just wanted to join in - or to see the classic RTS for themselves. This would have allowed both free and paid users to play together through games that look different but play exactly the same. Possibly realising the continued threat of bots and hackers soiling the experience without throwing down a single dollar, however, likely ruined the plan. They'd just keep coming back.
So, you can thank cheats for you having to pick up StarCraft: Remastered if you're looking for some multiplayer action in the game that most of South Korea still enjoy over its sequel. Thanks, guys!