A week on from its promised announcement, OnePlus has officially launched OxygenOS 15, the latest iteration of its smartphone (and tablet) user experience on the international stage, and it’s one of the first to arrive based on the latest Android 15, which itself released back in mid-October. The theme of the new operating system is “speed meets AI”, building on the company’s long-standing commitment to providing a “fast and smooth” software experience across its devices. In a nutshell, AI underpins new features that focus on creativity, productivity and security. Well, it is 2024 after all. H…