Everything at the moment feels rather provisional. A high likelihood this year of some mid-tax year changes, depending on what happens or doesn’t with Brexit.
The new digital platform for VAT is going ahead from April 2019. The information needed and the rules on what is included in the VAT return stay the same. It is the method of storing and transmitting the information to HMRC which are changing. Further details on my Making Tax Digital page.
Digital returns for income tax are not planned until 2021 at the earliest.