Yes, according to these sources: huffingtonpost, cnn, there is a new zodiac to be considered if you believe in sidereal zodiac (the eastern system, in which constellations are considered for zodiac sign).
The new sign is that of Ophiuchus: which means 'the serpent bearer' in Greek. To know more about Ophiuchus, wiki link.
Astronomer Parke Kunkle says that due to changes in the Earth's alignment the dates of many zodiac signs have changed. Kunkle says that as the Earth and Sun slowly move the signs gradually change, as expected.