TL;DR of the post, generated automatically.

Roblox now lets TeleportAsync target a specific reserved or VIP server by ID.

• What's new: TeleportOptions gains ReservedServerId and VipServerId, both GUID strings. VIP teleports now work from any place in an experience, not just the root place.
• Groups: Pass several players with the same VipServerId. Each is checked separately, so players without access get TeleportInitFailed while the rest teleport normally.
• Deprecations: ShouldReserveServer, ReservedServerAccessCode, ReserveServer(), ReserveServerAsync() and TeleportToPrivateServer() are being deprecated next week. Existing access codes stay valid, but set at most one targeting field per teleport, or you get a Luau error.
• Known issue: VIP players who joined via link may lose authentication when teleported away. The page's fix is to ask them to update Roblox.