What's the Difference between Future Simple and Future Progressive?
by Shlk Hasan
What is the difference between "I will be waiting" and "I will wait"?
"I will be waiting" means that in a certain time in the future you will be in the process of waiting. It gives emphasis on the fact you will be waiting.
"I will wait" gives no such emphasis.
Read this for more details:
Using the Future Tense in English