"Eventful start" means that the beginning of something was filled with a lot of interesting or exciting things happening.
Full definition
So what seems evident is that Windows 8 will witness a
rather eventful start in the tablet sphere before settling down in the long run.
It has been
an eventful start to the year for the CEO of the world's largest advertising group.
Eagles 0, Falcons 0: Well, this has been
an eventful start to the game.
The Premier League giants would clash in week 3 after both having
eventful starts to the new term.
The week was off to
an eventful start before the convention officially gaveled in because of a major shakeup in Democratic party leadership.
Daisy had
an eventful start to her residency, which began right on the heels of Fresh Milk hosting an exhibition & artist talk about Sonia Farmer's piece «A True & Exact History».