LEMONADE is the Internet Engineering Task Force (IETF) technology being standardized for support of Mobile Email. Isode has been an active participant in the LEMONADE working group and we'll be incorporating the Profile in to the next major release of our messaging servers (R12).
The LEMONADE Profile is approved, and it is anticipated that it will be published shortly as an Internet Standard. A new whitepaper on our website, "LEMONADE Profile: The Key Standard for Mobile Messaging", explains what the LEMONADE Profile is about and why it will be the central specification for Open Standards mobile messaging.
You can find the whitepaper at: http://www.isode.com/whitepapers/lemonade-profile.html