After seen the car I can say it looks pretty different. the fastback rear is a start of new design language in India in budget entry level sedans. If it would be little longer would look outstanding.
before the sight I was thinking which was designed first Tiago or the sedan version? But now I think its the sedan version cause the headlight assembly looks better integrated(complete one black part) with grill than hatchback (my opinion) however it require different set of alloys than Tiago, which will do the justice to the fastback sub4m boot. And It begs for bigger tyres.
Even the Tiago alloys are incomplete of the original alloy design or I would say half done version to maybe save cost.
Would love to answer your questions If anything specific you want to know