[whpalmer4]

It seems unlikely that we'll get definitive word from Apple about whether or not they will continue to provide WebDAV storage (such as OmniFocus uses) that you could use until shortly before they roll out the service. Fortunately, you can painlessly switch over to the Omni Sync Service if necessary. You just make sure your devices are all synced, switch one to sync to OSS, sync to install the database on the OSS, then switch the others to sync to OSS. You may even find that your syncs are faster, depending on your network connectivity. Not much cause for concern here.