Senna Out, Bottas In at Williams

Williams have confirmed that their 2012 reserve driver Valtteri Bottas, will replace Bruno Senna for 2013. 
Bottas will race alongside Venezuelan team-mate Pastor Maldonado, of whom will venture into his third season with the British squad, after months of uncertainty regarding the security of his seat for next year.. Aswell as joining the world's elite drivers on the grid, Bottas' involvement next year means that for the first time since 2002, their will be two Finnish drivers on the grid, with Kimi Raikkonen again spearheading Lotus F1's charge for a second season running. 
Having impressed team personnel, fellow drivers, fans and experts alike, Bottas' promotion to a race-seat is far from unexpected, with his predecessor Bruno Senna rumoured to be on his way out of the team for the majority of this season, despite a string of strong results. Sir Frank Williams himself boldly stated that the Finn is "one of the most talented young racing drivers we have ever come across". Such a statement puts the youngster in the same bracket as former Williams stars such as Alan Jones, Juan Pablo Montoya, David Coulthard, and Jacques Villeneuve. 
With Bottas and Maldonado on board for 2013, it cannot be overlooked that the line-up is one that concerns significant financial backing from the two drivers, and may have acted as a catalyst for Senna's removal and Bottas' promotion. 
Bottas' reputation comes before him, having won the inaugural GP3 Series in 2011 with ART and clinched the infamous Masters of F3 held at Zandvoort the year previous. More impressive however is Bottas' promotion to Williams Reserve Driver, seemingly skipping feeder-categories such as Formula Renault and GP2. It is clear that Bottas has impressed. 
So where now for Senna? With race seats for 2013 now few-and-far between, it would seem that the Brazilian's dwindling career in F1 is nigh, with the most probable destination for Senna being North America, and more namely, IndyCar. 
With regards to IndyCar, with the likes of Heikki Kovalainen, Kamui Kobayashi and Vitaly Petrov likely to be ousted from Formula One, the North American series could be about to see an influx of proven F1 drivers enter it's drivers market, with their respective track-records likely to become appealing for team bosses throughout the IndyCar franchise. 
As for Bottas, 2013 signals a debut year filled with pressure, a probable baptism of fire, and a great degree of promise.