With the arrival of Windows 8 several things have changed in application development, now with the concept of Windows Store Apps (WinRT). These new applications does not use icons files, but PNG images for the tiles.
With this, it is possible to conclude that the icon file format is becoming, or already has become, obsolete?
I ask this because recently I developed a IconBitmapEncoder for wpf, an encoder to generate icon files. Then came to me this question, if I was investing my time in something that could already be obsolete.
What is your opinion about it?