For Ubuntu Trusty it would be nice to have these packages in unstable so they can be synced,
While automatic syncs to Ubuntu LTSs such as 14.04 are from testing, manual syncs are allowed even from experimental (https://wiki.ubuntu.com/SyncRequestProcess , example: https://bugs.launchpad.net/ubuntu/+source/subtitleeditor/+bug/1264822 ). For a single package without Ubuntu-specific changes, just asking seems to be enough, but I can't find their policy on transitions. (They do use Ben, http://people.canonical.com/~ubuntu-archive/transitions/ )
February 20 - Ubuntu does have freezes. https://wiki.ubuntu.com/TrustyTahr/ReleaseSchedulebut I don't think we can get the SpatiaLite transition done before April.