Here’s the latest landlord engagement newsletter; https://www.gov.uk/government/publications/universal-credit-landlord-engagement-newsletters/may-2019-universal-credit-landlord-engagement-newsletter
The gov.uk guide has also been updated and answers many landlord queries; https://www.gov.uk/government/publications/universal-credit-and-rented-housing–2/universal-credit-and-rented-housing-guide-for-landlords