It is perfectly acceptable to make a telephone call to the attendees of the meeting before the next meeting, to follow up on the progress of any action items or clarify any questions that may have arisen. It is generally normal practice for managers to brief their teams on the outcomes of the meetings they have attended, unless these are subject to confidentiality. It is good to ensure that open communication channels exist within teams, and if you are joining such a team you should expect this approach.