This stamp will be issued April 9, 2018. From Israel Post:

“Today, as it celebrates 70 years of independence, Israel is a developed country with a strong economy and high quality of life, the life expectancy of its residents is among the highest in the world and its political standing is stronger than ever. The State of Israel looks forward with a sense of hope and security and with faith in its ability to continue to strengthen the momentum of its achievements for an even better future.”