I want to know if Raspberry Pi Zero is able to run the new tensorflow 1.9 ?
Yes, TensorFlow 1.9 supports the Pi—as stated on the TensorFlow blog, in the article TensorFlow 1.9 Officially Supports the Raspberry Pi:
Thanks to a collaboration with the Raspberry Pi Foundation, we’re now happy to say that the latest 1.9 release of TensorFlow can be installed from pre-built binaries using Python’s pip package system! If you’re running Raspbian 9 (stretch), you can install it by running these two commands from a terminal:
sudo apt install libatlas-base-dev pip3 install tensorflow
Be sure to use Python 3 and
pip3 as the pre-built packages are only for Python 3. If you use Python 2, your Pi will attempt to build all of the packages itself, which will take a very long time.
No guarantees are made about how well TensorFlow will work on the Zero, though—probably, not very well. The Zero has very limited resources, but you don't have to compile the packages, at the very least, so it's worth giving it a try.