eLinguistics.net will publish step by step timeline maps of the evolution of languages. As a first beta edition you can see the timeline
for the Indo-European languages as well as Altaic and Uralic languages, as designed on the basis of the eLinguistics data.
Indo-European evolution timeline:

You can also download this timeline as pdf -
IE evolution timeline PDF format or browse the result in
the
interactive Indo-European language tree
Altaic (Mongolic, Turkic), Uralic and Tungusic evolution timeline:

You can also download this timeline as pdf -
Altaic + Uralic evolution timeline PDF format
Afroasiatic evolution timeline:

You can also download this timeline as pdf -
Afroasiatic evolution timeline PDF format or browse the result in
interactive Afro-Asiatic language tree