Bartek has released the details of his plans for upgraded versions of his excellent iGTD. Specifically there will continue to be the free version (basic) but he will be adding "iGTD Home and Office" that allows you to sync between Macs and "iGTD Pro" which allows you sync with the web. While I am continuing to use OmniFocus, iGTD is really tempting me. Since I have a windows box at the office it would be really nice to log in to my iGTD data from it. Omni has been quiet about syncing features but I do understand they are racing to finish the 1.0 version. If Omni could just get a reliable iPhone sync that doesn't require me to turn my MacBook into a server, that would probably be enough for me. Still and all, I'll have to keep my eye on iGTD.
You can read about the different versions of iGTD right here.