So far, not much has been disclosed on the differences between “legacy” and new Symbian systems. All we know is that the operating system is “supposed to be downward compatible”.
Forum Nokia has now provided its C++ developers further information on porting their apps. As not every Symbian head is a member of Forum Nokia, find the announcement below:
New Resources Make Symbian^3 Migration Even Easier
To help developers making the move to the Symbian^3 operating system, Forum Nokia offers several new and useful resources.
Among other new features, Symbian^3 introduces a finger-optimised UI with enhanced layout and new single-tap interaction style. This UI is described in the Forum Nokia Design and User Experience Library’s article, ‘UI in Symbian^3’.
Symbian^3’s new UI style requires minor changes for native applications. To learn how to port your existing Symbian C++ applications to Symbian^3, go to the Nokia Symbian^3 Developer’s Library.
While Web Runtime (WRT) widgets developed for earlier Symbian for S60 devices will work fine on Symbian^3but some optimisation might be needed for an even better user experience (UX). For example, a new loading indicator in the top right corner may require modifications to home screen content. Another significant change is the softkey and menu positioning in landscape mode. Applications designed to scale to 100 per cent width and height of available screen estate should not be affected by this change. But applications using native menus or resolution-specific custom layouts will most likely be affected; they may need to a redesign to some parts of the UI. For more information, check out this Forum Nokia Wiki article, ‘Web Runtime Widgets in Nokia Symbian^3 Devices’.
Flash developers, attention: While applications developed for earlier releases should still work out-of-the-box, Symbian^3 brings some new compelling features with Flash Lite 4. Learn all about them in a Forum Nokia Wiki article, ‘Flash Lite 4 in Nokia Symbian^3 Devices’.
P.S. Forum Nokia is also open to Symbian developers on Samsung or SE machines. Join them, ASAP!