A little research on Android SDK extract, combined with the Wi-Fi certification HTC Volantis , also called Nexus 9 specifies the firmware as "LMP" (initials Meringue Lemon Pie). If you search the Android Open Source Project is done, with the term "LMP" 9 results are obtained, which are many clues, and it stops being coincidence.
Ticket may take as Android 4.4 , called an "KLP" Key Lime Pie, Nestle came up with a marketing offer and because that is the name we all know now.
I do not know if in the end they will choose that name or another. The only thing is that I hunger to hear both names of desserts ... What do you think of this name for an operating system?