Product life cycle and obsolescence year

I was searching to get information for under mentioned equipments Product life cycle and obsolescence year details.
If anyone can help, how and where can I get that and if someone have the same for reference, please.
1. GE Speedtronic Mark-II control System.
2. BHGE Bentley Nevada 7200.
3. Allen Bradely PLC 5/40
4. Foxboro I/A serires Version 8.0.
5. Foxboro 762 controller.
6. Emergency Shutdown System by ICS controls.

Best wishes;
 
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