Microsoft's move to trademark the word "Forzavista" has generated a great deal of speculation that this would be a feature in an upcoming Forza Motorsport game that we are likely to see at the Xbox reveal event.
The Forzavista trademark, obtained just before the much-awaited event, is filled under IC 009 which is the usual class for video games and game software. Siliconera discovered the trademark and reports the description of Forzavista as "a feature of interactive video game software which allows players to obtain statistical information of internal and external features of a vehicle and to virtually navigate and operate those vehicles."
Comparing this with the trademark for Forza Motorsport that is described to be for "computer programs, namely, game software for use on computers and video game players," its most likely that Forzavista will be a feature in an upcoming Forza Motorsport game.
It should also be noted that Forza Motorsport 4 had a feature named Autovista which allowed gamers to get up close and personal with many of the game's cars. It further gives rise to a speculation that the newly trademarked word can be a renaming or expansion of the series.
With all these theories on the word Forzavista and its possible relation to Forza Motorsport, we wouldn't be surprised if Microsoft introduces this feature inside new Forza Motorsport game for the next Xbox at its reveal event.