Would you like a slice of Lemon Meringue Pie with your KitKat?
Fact: Bears eat beets. Bears. Beets. Battlestar Gallactica. Another fact -- every version of Android since v1.5 has been named after a sweet dessert, in alphabetical order (Cupcake, Doughnut, Eclair, and so forth). As it stands, the next version of Android is currently codenamed L, and we can think of a bunch of desserts that start with that letter. However, there's evidence to suggest that Google with run with Lemon Meringue Pie for Android L.
Android Police found multiple official sources in code and documentation that list the next release as "LMP," which strongly suggest Google is baking Lemon Meringue Pie. It makes sense considering Google dropped Key Lime Lime at the last minute in favor of KitKat. Pie lovers are still owed a slice of pie, and it appears they'll get it with the next Android release.
You can find references to LMP is in the Android SDK, which mentions the current preview builds of Android L available for the Nexus 5 and Nexus 7 labeled as "lpm-preview-release." An LMP reference is also found in the Wi-Fi certification for HTC's "flounder" (Volantis) tablet, which points to LMP firmware.
Fun fact (not about bears): Before Key Lime Pie was tossed aside for KitKat in Android 4.4, the release was known as KLP in internal documents.