Looks like Mahesh Babu is under pressure. His sudden announcement of his line up of movies for year 2017 is said to be result of this. 

A day before his tweet, producer Suryadevara Radhakrishna issued press release saying NTR and Trivikram's movie will go to the sets in September 2017 and Trivikram - Pawan Kalyan's film would begin regular shoot from Feb. Still, Mahesh chose to announce a film with director Trivikram as 2017 project. Obviously, Trivikram cannot commence Mahesh Babu till he completes Pawan and NTR movies. 

Mahesh Babu who is currently working for Murugadoss flick will start shooting for director Koratala - Danayya film that was officially launched two months ago. His other film with Vamshi Paidipally - Dil Raju - Ashwini Dutt might begin in July. But fans have been putting pressure on Mahesh Babu to team up with director Trivikram. So he seems to have announced it as 2017 film though it may not go to the sets this year.