Konami has refuted a GameSpot report that the Forward Operating Base PvP multiplayer mode in Metal Gear Solid V: The Phantom Pain will be locked behind a paywall. PC Gamer has word from the developer that this is "simply not true." Here's the official statement:

Gamespot posted an article following the review that the PVP (FOB) mode in MGSV TPP will be restricted behind a micro-transaction paywall and that is simply not true. The FOB mode will be fully accessible at launch and the micro-transaction layer to that specific feature in the game primarily acts as an accelerator. We’ll have more details at launch, but we did try and clear these rumours up when they started circulating during E3. We even addressed this in our official E3 2015 demo when it went live during that show.