I just got the 30 day notice for my Apple developer subscription. I'm not planning to renew it.
The GameTZ app will be pulled from the app store when that happens. So, if you have any interest in it (for ios devices), it may be worth grabbing it now before it's gone. Here's the link: https://itunes.apple.com/us/app/gametz-go/id121089...
(also in the footer of every gametz web page)
If you haven't used the app, it's honestly nothing special. But, it can be nice to get notifications and it will do most messaging-based stuff (forums, pms, offer messages). It doesn't do item lists or trading.
I think this happened last year too, but there was another issue with notifications failing that motivated me to re-subscribe to fix it. I think notifications will work indefinitely since that fix.
This is only for the Apple/ios app. The Android should be around a while longer.
Why not renew my Apple developer subscription? Well, it's $100/year and only a handful of people use the app. Also, my ability to maintain the app is eroding (was always a tenuous thing).