is held vs. to be held vs. will be held

English as a Second Language English Vocabulary, Grammar and Idioms
1

Hello, which option is correct? Or are they interchangeable in this sentence?

The International Conference on Image Processing is held in China from 17 to 20 September, 2017.
The International Conference on Image Processing to be held in China from 17 to 20 September, 2017.
The International Conference on Image Processing will be held in China from 17 to 20 September, 2017.

2

The International Conference on Image Processing [color=blue]is to be held in China from 17 to 20 September, 2017.
The International Conference on Image Processing will be held in China from 17 to 20 September, 2017.

3

Thank you, Bev!