Microsoft recently announced a series of upgrades to its AI suite. They announced support for the Llama 2 large model and the launch of the GPT-4 version of Office. Llama 2 is a new AI model with powerful natural language processing capabilities. The GPT-4 version of Office is a premium office suite offered by Microsoft, available for users through a $30/month rental model. This upgrade signifies that Microsoft's AI technology will become more advanced and comprehensive.