Originally the Slot Card Guide was only published every 2 years when it was a printed book. There are way too many new releases and updates these days to wait 2 years for updates. When I switched to electronic releases I started doing new releases every 3 months so it's much more current. And if something just misses a release it's not a big deal to have it show up in 3 months.

By the way, when Pat Lamb was doing the printed books it took her almost a month to generate the final release for her printed books. After I took over and reformatted everything I can now generate the electronic releases from my master copy in a few minutes. So it's not a big deal for me to handle the 3 months updates and then users can decide when they want a new copy and how often. It's there whenever you need it.