Apple says all betas expire in 30 days.
Not sure they will tell you an update is available.
You may have to go to the App Store and SEARCH for FxCal.
Please download 5.2.0 from the App Store.
It is the same code as 5.2.0b11 from TestFlight
Sorry, TestFlight is new to me also.
But it saved some of our bacon on the last VIPS change.
AppDude