Microsoft 365 Copilot AMA

So I have a bunch of questions, which I hope to get answers to... 1: Will CoPilot be available for ALL Office 365 tenant regions? such as Norway? If we have a customer with O365 data tenant in Norway will they be able to use the service right away or will it require Azure OpenAI to become available in that region before copilot becomes available? 2: Is semantic search enabled by default for all tenants and if so how can we check if it is rolled out? 3: How will we be able to detect usage and analyze the usage of Copilot to see what people are asking about? Will that require Viva insights? 4: Will Copilot be based upon GPT 3.5 or GPT 4? 5: Will there be guides for how to increase relevancy for a document to be included in Copilot? I'm guessing that copilot search will fetch the top 3 documents and try and make a summary, but sometimes it might not be the most relevant document so would like some insight into how the index is built and how it chooses the most correct document 6: Will QnA, bookmarks, addresses and such which are part of the Graph Search be available as content in Copilot? 7: Will there be a generic chat interface in Copilot? or will it only be available through Microsoft Apps? 8: Will there be any additional cost for using Copilot with 3. party data connected through the Graph Connectors? Will the same licensing requirements apply? https://learn.microsoft.com/en-us/microsoftsearch/licensing 9: Will there come a Graph API that will allow us to interface with the Copilot?