The CS community took out their knives and eagerly sprinted forward to the hundreds of user-made maps filling Global Offensive's Workshop since last month (opens in new tab) . We've got a nice stack of them (opens in new tab) running on our own server, and Valve is evidently looking to copy that setup on its own servers. Data-divers of reddit (opens in new tab) have found mention of a "Support Pass" in the next patch for players to purchase and access a pool of community maps soon to join the official server rotation.
A list of new data strings (opens in new tab) found in the patch mentions a "Community Support Pass Season One" to "grant access to Season One's featured community maps on official servers." The proceeds are distributed evenly to map contributors in what's likely an incentive to encourage an increasingly large selection of maps to feature.
The data doesn't mention a price, but Valve has a similar system in place with Team Fortress 2's co-op Mann vs. Machine mode, where players access multi-map sessions by purchasing $0.99 tickets. Assuming GO's passes carry a similar cost, it should result in a relatively simple way to jump into high-quality custom battles for little effort. The patch is expected to hit this week, so we'll have a clearer understanding of Valve's plans soon enough.