UK Government ministers said the changes would be a 'proud reminder of our history and the ties that bind us'.
Music venues, theatres, comedy clubs and nightclubs offered funding lifeline to manage impact of Covid.
Scottish Government says money is intended to support sector while a restart date for performances remains unknown.
A total of £97m is coming to Scotland from a UK Government support package for the arts.
The £50m cinema complex would feature six screens, allowing the festival to showcase more movies.
Trees for Life will establish the centre on a 10,000-acre estate in the Highlands after receiving more than £2m in funding.
