eLearning, E-learning, E-Learning or e-Learning?

My friend who is a grammar stickler explained to me that with new hyphenated words (like e-learning), as the word becomes more commonplace and well-known/used, the hyphen is eventually dropped.

Examples: web-site has become website, e-mail has become email.

This means that "e-learning" will likely one day be recognized in the dictionary as "elearning" and the latter spelling might even become more common

Random fact!! =)

• http://blog.referralcandy.com/2013/10/22/ecommerce-hyphen/
• http://www.onlinegrammar.com.au/hyphens-and-their-usage/

PS Even Jay-Z dropped his hyphen - he's now Jay Z! Haha :) (Jay-Z to become Jay Z in massively disrespectful move against hyphens)