Well lets see ... we went from logographic to syllabic to phonetic aka: alphabetic in 50, 000 years.
Most recently we had Old English (450-1150), Middle English (1150-1500), and Early Modern English (1500-1700)
This royall Throne of Kings, this sceptred Isle,
This earth of Maiesty, this seate of Mars,
This other Eden, demy paradise,
This Fortresse built by Nature for her selfe,
Against infection, and the hand of warre
This happy breed of men, this little world,
This precious stone, set in the siluer sea,
That is middle english btw, so yes I dare say it does indeed change ...