Nokia is hosted a press event today, with the Symbian-powered Nokia E7, C7 and C6 smartphones just announced to the world.Showing off the latest version of Symbian, the new smartphones have the added bonus of more speed and according to Nokia are easier to use, thanks to a total of 250 improvements overall. The devices also integrate with the next-generation of the Ovi Store. More on that later, what about those phones?Well, so far, details are limited, but topping the bill is the Nokia E7, described as 'the ultimate business smartphone', although we suspect RIM will have something to say about that. It's got Microsoft Exchange ActiveSync on board for 'direct, real-time and secure access' to corporate email inboxes and other personal applications. There's also a 4-inch touchscreen display featuring Nokia ClearBlack technology for improved outdoor visibility and a full, slide-out keyboard. It should sell sim-free for 495 Euros.The Nokia C7 is described as a social networking smartphone, offering live updates from social networks such as Facebook and Twitter, plues Yahoo! or Gmail accounts directly to your homescreen. It also has a 3.5-inch AMOLED display and a stylish mix of stainless steel, glass and soft edges for the design-conscious. Estimated retail price is 335 Euros.The Nokia C6 is a smaller smartphone, packing a 3.2-inch AMOLED display with full touch capabilities and that Nokia ClearBlack technology once more for improved outdoor visibility. It's also optimised for social networking and with that stainless steel and glass design, also looks the part for the style conscious. It looks more than the 260 Euro price tag suggests.As mentioned previously, all have that new version of Symbian, with added features including support for multiple homescreens, visual multitasking, gesture-based interactions and a noticeable reduction in prompts. But for you traditionalists, all have the same familiar Symbian feel. There's also free Ovi Maps, access to Ovi Store, messaging and social networking as standard.Talking of the Ovi Store, Nokia has updated that too, with a friendlier interface and new content, including the likes of foursquare, Angry Birds, Need for Speed Shift and Real Golf 2011. Check out the new Ovi and the new smartphones when they land, before the end of 2010.