Hi @Omar, great that you are looking into Rasa 1.0!
Yes, in Rasa 1.0 we removed projects. We wrote a post a couple of weeks ago on that decision: Removing projects for Rasa NLU server. Feel free to comment with your feedback.
With Rasa 1.0 an agent can just have one model loaded at a time. If you are running a Rasa server, you can replace the loaded model of an agent by calling PUT /model (see https://rasa.com/docs/rasa/api/http-api/#tag/Model/paths/~1model/put). So you can either load the desired model before answering a request or you can run two Rasa servers - one for each model. As this solution might not be optimal, we are still collecting feedback. So, please share your thoughts